Comparison of the Nokia N73 camera with modern smartphones. How far has progress come? Comparison of the Nokia N73 camera with modern smartphones Phone nokia n73 mobile specifications
Contents of delivery:
- Nokia N73
- Nokia Battery BL-6M (1100 mAh)
- Nokia Charger AC-4
- Adapter charger Nokia CA-44
- Nokia Classic Stereo Headset HS-23
- Nokia Connectivity Cable CA-53
- Wrist strap and lens cleaning cloth
- CD: Nokia PC Suite and Adobe photoshop Album Starter Edition
- User Documentation: User Guide, Getting Started Guide, Connection Guide, and Additional Applications Booklet
In the segment of "multimedia computers", as Nokia is trying to call Nseries products, the main sales have always accounted for not the most functional models, and for products with the N7x index. The explanation lies in the price, and a certain conservatism of smartphone consumers who prefer balanced decisions, and not products with the prefix "flagship" or "best". The share of the so-called techi is always about the same in all markets, only this category is ready to pay big money for the implementation of certain functions, the mass market is not like that. As a result, flagship products are created with an emphasis on individual functions, for example, video in the Nokia N93, music in the N91 (in reality, the company does not sell music in the N91, but HDD). Already a step lower, in N8x products, we see an attempt to satisfy the audience not only of techi, but also of fans of combined solutions who prefer the latest products with all the functions, even if they do not need most of them. If we think of the Nseries line as a pyramid, today we will have N7x products at the base, N8x products in the middle and N9x products at the top. The company even specifically emphasized that in the first quarter of 2006, the N70 became the most successful UMTS device on the market and a profit generator for the company. The explanation for the successful sales of such devices is the fact that Nokia has formed the modern smartphone market and is a recognized leader in it. By redistributing her efforts in this market, she is free to generate revenue from any of the products in her portfolio. So, in this moment models outside Nseries practically do not exist (the exception is Nokia 3250, Nokia 5500, both products are successful in their segments in terms of sales). It turns out that the most popular device is the Nokia N72, while the Nokia N73 is intended to become the flagship of the Nseries line (total technical characteristics, price / quality ratio, margin for the company). This device promises to become a model with a long life cycle, the solutions that we see in it will be reflected in the devices of 2007.
A lyrical digression or an interesting observation about device positioning. Nokia, introducing Nseries, limited itself in the number of models by assigning a two-digit numbering and using senior indices. At the moment, we can expect the appearance of N6x devices, these are the most simplified smartphones aimed at the mass market, which will be promoted with great fanfare. At the same time, the presentation of N5x devices does not seem possible, negates the general idea of a series of smartphones that include a maximum of functions (all in one solutions). At the current rate of product announcement or a slight increase, the numbering index will be exhausted within 3 years. This will mean a change of concept and the appearance of a new index, or a reassessment of the existing positioning, which looks like an inelegant solution (for example, three digits in an index). At the moment, the likelihood of a change in concept and the launch of a new series of devices looks more likely.
When creating Nokia N73, we tried to combine various technologies in one device, to make the device interesting from the photographic point of view, and also to add good basic functionality. The calculation for the mass market resulted in various colors, there are three of them - Silver Gray / Deep Plum, Frost White / Metallic Red, Frost White / Mocha Brown. In all versions, the front panel is light in color, the sides and the back are different. The two color options (Deep Plum, Mocha Brown) are externally similar to each other, the difference is greater in shades. At the same time, the red phone looks interesting for the female audience. In the future, a black device will appear, whether this addition to the standard colors or the device will be released in a "limited" series in cooperation with someone is unknown.
The size of Nokia smartphones is constantly decreasing, and this model was no exception, this is the top of miniature for smartphones with a QVGA-screen. At the moment, only Nokia 5500 is smaller, but it is inferior in screen quality. The device measures 110x49x19 mm and weighs 116 grams. In the future, the parameters of phones of this series will fluctuate in the region of the same dimensions, further reduction will not occur.
If you draw parallels with regular telephones comparable functionality, the same Sony ericsson The K800i measures 106x47x21 mm in the thickest part of the camera (so the thickness is 18 mm) and weighs 113 grams. There is a difference in size, it is felt, but it should not be perceived as huge, the devices are by and large comparable.
The display in this model has a diagonal of 2.4 inches (37x50 mm), the screen shows up to 262K colors (TFT), its resolution is 240x320 pixels. The same screen is used in Nokia N71, it is comfortable in size, reading information on it, is the maximum possible for this diagonal. It is curious that with a comparable diagonal VGA-screens will appear, the platform is already preparing for the arrival of such displays. The image looks good on the screen and is comfortable to work with. The display is equipped with a translucent metallized backing, which ensures good readability in the sun, a characteristic feature of the latest generation models.
The build quality of the body is good, right up to the moment of touching the back cover, a sliding shutter is attached to it, covering the lens. There is a cavity under the lid to the left of the latch, and even a slight touch makes the body squeak like an unlubricated cart. This is the most unpleasant moment in the phone, connected with the build quality, it's hard to fight it on your own. Placing rolls of foam or other soft material under the back cover does not work.
A VGA-camera is located above the screen, it is used for video conferencing in third-generation networks, but you can also get photos of yourself from it. Nearby is a light indicator, it adjusts the keyboard backlighting, turns it on in case of insufficient light. The light signal of Bluetooth operation is inscribed in the same indicator.
The keypad in Nokia N73 is unusually unsuccessful, it was shifted down as much as possible, the number keys are close to each other and are very crowded. Working with the device with one hand is problematic, although possible. The ergonomics of the keyboard are below average. The decision to place the function keys (menu, editing, С, Multimedia) on opposite sides of the number keys is doubtful. Sometimes, when typing, you can unwittingly touch them. The same solution is used in Nokia N72. The backlighting is blue, it is well seen in various conditions.
The joystick in Nokia N73 is another reason for thinking about ergonomics. It is deeply recessed into the case; working with it is not just inconvenient, but unpleasant. In my memory, no Nokia smartphone can boast of such an unsuccessful joystick.
Considering that in a smartphone without touch screen the keyboard is the main means for entering information, we can talk about very weak Nokia features N73, it is not a quick communication tool e-mail, SMS and so on. Due to keyboard problems, it is worth considering this device as a good "multimedia terminal". The company apparently understands the ergonomics of the keyboard, so an external Bluetooth QWERTY keyboard is actively offered on the Nokia website as a main accessory. I don't want to exaggerate, I note that users are accustomed to the circular keys of the Nokia 3650, two rows of buttons from Siemens SX1, there is no such mockery of ergonomics here. So they will get used to this decision, even if it is not very successful.
An IrDA window is located on the left side, and a strap hole is located closer to the bottom end. The miniSD-card slot is located on the bottom end, the plug is mechanical, not hinged. From the side of the Pop Port interface connector, you can pry it off and change the card (hot swap is supported). Cards of any size are supported, a 2 GB card worked perfectly in our device.
One of the innovations in this model is the presence of two speakers that provide stereo sound. Until recently, no smartphone had such an opportunity (HTC Wizard is rather a test of strength, not very successful in this regard). Nokia plans to use stereo speakers in a number of models on both the S40 and S60. The flagship of S40-based products, Nokia 6233, also has stereo speakers.
Due to the arrangement of the elements, the speakers in Nokia N73 were placed in the upper and lower ends - a very controversial decision. Yes, indeed, they cannot be placed on the sides of the display just like in Nokia 6233, due to the fact that the space there is occupied by the camera module, and moving them out below means that the user will cover them with his hand. Let's ask a tricky question: how are the ears located in a person? The correct answer is horizontal, hence the perception of sound is somewhat different than if our ears were located vertically.
Nokia N73 owners can do a simple experiment: turn on the Seahorse.aac ringtone and hold the phone as usual. Rotate it 90 degrees during playback. You will hear that the sound has become juicier, more pleasant, you can hear two speakers. With the normal position of the phone, you will hear better from one speaker and only it. To achieve the same sound, it would be possible to compensate for the sound level, fine software setting, but then you would have to forget about the horizontal mode (for example, watching a video). It is unnecessary to make settings for each of the modes, users will not appreciate it.
So it turns out that the ringer volume is high due to the two loudspeakers, it may even seem melodic in the absence of comparison with the same Nokia 6233. But as soon as you hear the same song on Nokia 6233 and on Nokia N73, the winner will not call you without any doubts. Hence, it follows that technically stereo sound is largely unattainable for this particular model, this is just a reserve for the future (the ringtone volume is high, which is nice).
In the Programs section there is the 3D Tones application, in it you can enable support for the surround sound of calls, select various stereo effects (reverberation, in particular, the sound path). The effects are implemented well, you can hear them. But in general this function- just a marketing ploy applicable to the device in question. The survey showed that the majority do not hear the difference between different effects on the same melody, they perceive it in the same way during a call.
A lithium polymer battery BP-6M with a capacity of 1100 mAh is hidden under the back cover. According to the manufacturer, it can provide up to 370 hours of standby time in UMTS networks (350 hours in GSM) and up to 4 hours of talk time. In conditions of active use of the device, it lasts for one day, from morning to evening (30 minutes of Internet browsing, receiving mail several times, up to 20 minutes of using other functions, an hour of talks). The device definitely behaves better than the Nokia N80, it has about 30% battery life. With moderate use of the phone, the average battery life will be 2 days. Longer run times are unattainable. In continuous mode of listening to music at maximum volume, the operating time in our case was about 12 hours. Time full charge battery exceeds two hours.
Software and hardware features
The model is built on the traditional TI OMAP 1710 platform (only the N93 uses a new platform), which makes it similar to other devices; so, the processor frequency is 220 MHz, and the volume random access memory for applications is 20.5 MB, while about 42 MB is available to the user internal memory... All data can be stored on a memory card.
The Bluetooth version in the smartphone is 2.0 with EDR support. The device supports the following profiles:
- BIP-ImagePush;
- DUN-GW;
- FT-Server;
- HandsFree-AG (1.0);
- Headset-AG;
- OBEX;
- OPP-Client;
- OPP-Server;
- SIM Access-Server.
Unfortunately, there is no support for A2DP, that is, the transmission of stereo sound to the headset.
The model does not differ from other devices based on the S60 3rd edition, the set software and its capabilities coincide, as they say, one to one. We suggest that you familiarize yourself with the corresponding description of the built-in browser, as well as a complete description of all functions in separate materials.
From interesting features it is worth noting that USB 2.0 is marked by the manufacturer as working at full speed, which ensures that when transferring data to a memory card in USB mode Mass Storage is about 800-850 Kbps. This speed is about twice as high as in previous models. There is no USB charging.
The device fully supports all musical accessories, such as adapters for connecting your headphones or remote controls, including those from the Nokia 3250 bundle. The sound is good enough, at the level of other smartphones based on this platform. As a musical solution the device is average, there are no improvements in the player's organization, which is typical for the company lately, it singles out only certain models in the music segment.
One of the interesting features of this model is the presence of a new slideshow mode in the gallery, it can be launched by long pressing the corresponding key on the side. When switching from picture to picture, the zoom effect is used, you can choose any melody or mp3 file that will play in the background. The gallery is always displayed in horizontal mode, it is a little confusing to browse, especially if you have a lot of files and only need to find one of them. A partial way out may be to create your own albums initially and enter all the photos in them, but this way out is by no means suitable for everyone. Timeline view option, as on Sony phones Ericsson, would fit this device 100 percent. When viewing individual pictures (short press), you will be able to immediately send them for printing or add them to a special basket for printing.
Among the additional applications, the device includes the game "Snake", an antivirus (in reality it is not needed yet, read more about the reasons here - /review/nokia-eseries-soft.shtml). It is also worth noting that the manufacturer has equipped the phone with a full-fledged version of Quick Office (working with office files, the program is pleasant), as well as a PDF Viewer. This is where the gentleman's set of programs ends, all other applications are standard. Let me remind you once again that it is worth reading the relevant overview of the platform's capabilities.
Performance
The bottleneck of the device is its performance, the loss, in comparison with ordinary phones, in routine operations is almost twice. That is, the interface with standard settings and no additional programs(the ideal case) is leisurely, although it cannot be called too slow. Thus, the gallery opens for about 6-7 seconds (on Sony Ericsson K800i - 2 seconds), thumbnails of photos in maximum resolution are not immediately displayed when scrolling. The slowness will not be a hassle for most operations, it is compensated by the wide possibilities for using third-party programs, for example, ProfiMail.
At the same time, the performance of the Java machine is rather modest in comparison with the latest generation models from Sony Ericsson. Again, purely speculative, this is probably bad, in reality there are no problems. A big annoyance is the fact that Java applications on S60 do not always work correctly, which is associated with the implementation of the Java virtual machine.
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Comparison with Sony Ericsson K800i
Our readers have repeatedly asked to compare these two devices and show which one is better or worse. Such a comparison will certainly be incorrect, since different functions are interesting for different groups of users. For example, the Sony Ericsson K800i lacks a large layer of functionality in the form of reading office and pdf files. This immediately makes the apparatus less interesting for those who cannot imagine their life without such work. However, on the other hand, Wi-Fi is becoming an attribute of those who use this functionality, and this is where a dilemma arises. Everyone decides for himself what he needs.
The cameras are comparable, Nokia writes better video, plus there is a slight advantage in the perception of photos.
The battery life of the Sony Ericsson K800i is about 30 percent better.
The interface speed is about twice as high on Sony Ericsson (typical operations).
The screen is bigger and better in the Nokia N73.
The keyboard and joystick are better in the Sony Ericsson K800i.
Nokia does not have A2DP support, which prevents you from listening to music on wireless headsets.
Organization music player better on K800i, the sound with non-original headphones is comparable in both cases.
Here is such a heterogeneous set of differences that does not at all claim to be complete. In our English forum there is a separate topic dedicated to comparing these devices, it describes all the nuances, you can see the detailed differences, pros and cons of each solution. I recommend to read .
Impressions
The device has no problems with the connection quality, the sound in the loudspeaker is good, the interlocutor hears you well too. The power of the vibration alert is average, the phone trembles with small tremors. Due to the two loudspeakers, the sound volume is excellent, and the device can be heard well even from a bag, let alone from a jacket pocket.
The cost of the model is about 400 Euros in a number of European countries, while in the Russian market it starts from 600 dollars and more (in most places it reaches 800 dollars). It is impossible to expect a sharp drop in the cost of this model, its price range until the end of 2006 is 350-400 Euro, it will not be able to go beyond it. A purchase of $ 700 or more for this device is not justified in any way. Actually, this is payment for the ambitions of retail networks and only, for comparable money, you can buy Nokia N80, the model is distinguished by the presence of Wi-Fi, the best screen but the worst camera. At the moment, Nokia N80 is stable, which allows us to consider these solutions as equivalent.
If speak about possible problems with Nokia N73, they are described by the standard troubles of the S60 platform. The stability of working with the file cache has been improved, but problems remain, sometimes applications unexpectedly close. On Nokia N73 several times after photographing, I managed to observe an unusual error: when incoming call the screen did not light up, it was impossible to pick up the phone (only the "hang up" key worked), removing the battery helped, and that was all. The problems with the Nokia N73 are no more and no less than with any other smartphone from the company, the platform makes itself felt.
In the Nseries line, the N73 is the most affordable device that combines almost all the latest developments from the company, and most importantly - good quality camera. There is no doubt that this device will become one of the most popular in the Nseries lineup, even if it does not catch up with the sales of entry-level models like Nokia N72. If you are looking for a quality smartphone from Nokia, then the Nokia N73 is the best choice for you. Models of the previous generation, for example, Nokia N70 / N72, look very pale against its background, the older models are too specific and, by and large, do not offer super-functionality. The only serious drawback is the lack of Wi-Fi support, which makes it difficult to use SIP for a number of countries with no UMTS networks (there are high delays over the GPRS channel).
The company also certified RM-132 (Nokia N73-5) together with RM-133 (Nokia N73-1). The difference lies in the lack of UMTS support, only GSM is present. Whether this model will be announced to the public and whether it will go on sale is unknown, but the likelihood of this is high.
During its years of market leadership, Nokia experimented with camera phones. In 2005-2007, several flagships based on Symbian OS, equipped with advanced cameras with Carl Zeiss optics, were released, including the N73 model. This smartphone, introduced at the end of 2005 and hitting the market in early 2006, was not cheap, about $ 500 (equivalent to about $ 700 in prices after the 2008 crisis), but was equipped with a 3-megapixel camera on a large sensor, with German optics. Carl Zeiss.
In the last decade, I had this smartphone, and then it impressed with its photographic capabilities. But when I wanted to compare the photos of those times with the pictures from modern smartphones, it turned out to be impossible, since the archive of the pictures was lost in the event of a breakdown. hard disk... Therefore, when the opportunity arose to get my hands on the Nokia N73, I decided to compare its photographic capabilities.
Two modern devices of different price categories were chosen as opponents. The first device is a phablet Xiaomi Mi Max 2, with a camera on the flagship matrix of 2016 Sony IMX386. The purpose of comparing it with it is to determine how far progress has made in smartphones over almost 12 years. The second smartphone is the Chinese ultra-budget Doogee X5. Comparison with him is interesting in the sense that it allows you to evaluate how the photos from one of the cheapest smartphones look against the background of pictures from a rare flagship.
As you can see from the table, the camera matrix in the N73 is larger than in modern devices, a sensor of a similar size is now used, for example, in Samsung Galaxy S8. However, the "old man" has a low resolution and a smaller lens aperture. But, since the aperture is expressed through the focal length (in detail about the aperture of cameras), then dividing 5.6 by 2.8 we get 2 mm, 3.5 / 2.8 - 1.25 mm, and 3.81 by 2.2 - 1.73 mm. This means that, in fact, the lens eye on the N73 has a larger diameter than much newer devices, and therefore must transmit more light.
Despite the solid parameters of the camera, the Nokia N73 has a rather weak hardware by today's standards. It uses a Texas Instruments OMAP1710 single-core ARM9 processor at 220 MHz, no integrated graphics or ISP, coupled with 64MB of RAM. Such modest hardware cannot quickly process photos when shooting, and the focusing process takes a few seconds. The lack of high-quality post-processing can seriously affect the quality of images, and how it is in practice - see the comparison of examples.
Comparison of cameras Nokia N73, Xiaomi Mi Max 2 and Doogee X5
I will try to objectively compare photos from smartphone cameras taken in identical conditions to see the difference. Attention will be paid to detail, clarity of the contours of objects, color rendition, contrast, presence / absence and amount of noise. Logic suggests that Nokia N73, due to its low resolution, will give the least detailed picture... However, megapixels estimate only the maximum theoretical image resolution, while the actual resolution should be estimated in degrees of arc minutes.
It often happens that a matrix with a higher resolution has the same (or lower) real optical resolution than a competitor with a smaller one, since the dimensions of the matrix and the light transmittance of the optics are also important.
Bright artificial lighting
I'll start with the photos that I accidentally shot from slightly different angles (then all the pictures will be taken from one point, in one direction). As you can see in the examples, none of the smartphones deserved high marks, since despite the high-quality artificial lighting, the detailing suffers in all three smartphones.
As you can see in the small shots, the Doogee's sharpness is very bad: the foreground is blurred, and the background is generally filled with "bumps" from the spotlights. Less pronounced bokeh from the lights on the N73, but overall the image is much sharper. Due to the lack of effective noise reduction, the image from the ancient flagship gives off a little red, but in general the colors are much more natural (in Doogee they are depressingly gloomy). Mi Max 2 in a compressed size does not take photos much better than a rarity, the superiority is noticeable only in the quality of noise reduction: the shades look more uniform, there is no pronounced admixture of red.
On a close-up fragment, the noise from the N73 image becomes more noticeable, but overall the contrast is tolerable, the detail is also noticeable, a lack of dynamic range is noticeable (highlights on the players' shirts). In Doogee, despite the higher resolution, the contrast is worse, the blur is more, the colors are obviously gloomy. Due to the resolution, Mi Max 2 gives a closer picture, the detail is slightly higher in general (the number 68 of the sector is read only in this picture), but due to the work of the noise reduction, the overall sharpness has suffered a little (noticeably along the contours of the fans).
Landscape photography
The second test scenario is shooting landscape photography in moderate natural light. Again, Nokia has a noticeable lack of effective noise reduction, which is expressed in the slight redness of the picture, but in general the device tried to withstand the correct color range, there is no departure of the basic shades in warm or cold tones. Doogee generates a sad picture again, with faded gamut and no dynamic range. Only he failed the DD test, but N73 turned out to be the leader, which did not darken the trees with water, and was able to convey the blueness of the sky. Even Mi Max 2 did not do the job so well (the shooting, of course, was carried out with inactive HDR, so that comparison with devices that do not have such a mode would be fair).
Zooming in on a fragment of the image makes it possible to more closely familiarize yourself with the quality of detail, sharpness, the degree of blurring of the contours and the transfer of the texture of surfaces.
In the picture taken with the N73, individual fragments of the tree are not perfectly reproduced, but the foliage does not merge into one green spot, the contours of the trunks and branches are also clearly visible. The water mirror also does not merge into one dark spot, the contours of the reflections are traced. The same can be said about Mi Max 2, it more clearly conveyed fragments of foliage (nevertheless, the resolution here is much higher, even despite the wider angle of coverage). But the Doogee X5 heavily polluted the photo with noise, although it tried to convey the texture of the foliage, but the overall sharpness and contrast of the image turned out to be frankly weak.
Natural light (overcast)
The next test scenario is shooting in natural light conditions, in cloudy weather during the day. All three smartphones showed not the best dynamic range, illuminating a fragment of the sky. Most naturally reproduced the colors of Mi Max 2, Nokia N73 - in second place (again due to not better noise reduction the shades came out warmer than they really are), and Doogee loses again.
In terms of sharpness and contrast, the N73 is not far behind the Mi Max 2, and again surpasses the Doogee. This can be seen in the approximate fragment, where the contours of the leaves came out too loose. In general contrast, the "grandpa" is not very inferior to the young "shovel", but due to the resolution it provides better details.
If you look at the sheet on the right, the Mi Max 2 renders its texture well, the Nokia N73 also copes with this task, but Doogee failed. The same can be said for the dry leaf on the left.
Night photo with flash
For clarity of comparison of photos taken with a flash in complete darkness, the shooting was carried out in the same place as in the previous paragraph. Of course, here the result cannot be considered 100% objective, since the brightness of the flashes of the monitored devices differ, but indirectly, the level of detail in the images makes it possible to judge the ability of the optics and the matrix to catch light with a critically small amount of it. The more details in the photo are clearly visible, the more light the matrix catches at a time. All pictures were taken at approximately the same shutter speed and ISO values.
Here comments are superfluous, it makes no sense to give an example of approximate fragments of a photo. It is obvious that a modern smartphone was able to outperform its rivals, but the N73 also "did not hit the dirt on the face." But Doogee X5 once again lost, which is not surprising. Its tiny matrix with a weak lens simply cannot capture enough light.
Photo of printed text (artificial lighting)
Capturing printed pages is a fairly popular task in practice, so I did not neglect the desire to test smartphones in this mode. Analysis of images allows you to assess the ability of devices to focus at a short distance and transfer fine details of the object of the photograph.
Even shots that are not close-up make it clear that cheap Chinese smartphones there is room to grow. No matter how I focused, I still couldn't get a sufficiently detailed picture on Doogee. When viewed at 100%, blur is noticeable, and in some places the text will be difficult to make out if you are not familiar with the original document. The N73 does not take a perfect photo, there is noise, but there are no difficulties with readability, despite the lower image resolution.
As you can see in the fragments with 100% zoom, the Nokia N73 camera leaves noise, but the text is quite legible, the Mi Max 2 is doing fine, but Doogee fails. If the goal is to digitize and recognize a document scanned by a camera, then the X5 is definitely not suitable for such purposes. The human brain will still try to grasp the meaning of blurry symbols based on the context, but the "soulless machine" does not cope with the task, even when using Google's AI.
Macro photography (artificial lighting)
Another scenario for testing cameras is macro photography of objects containing many small details. And the photo of banknotes is well suited for these purposes, since they have enough small inscriptions, and strokes of various images, and patterns, and the color gamut is quite wide.
The smaller photos show only that the Nokia N73 again leaves noticeable noise and artifacts, while the Doogee X5 is prone to blur and again made a mistake with the color. But in this mode, it is impossible to compare photos in detail, so fragments at a scale of 100% provide more interesting information for analysis.
The first thing that catches your eye is multi-colored artifacts, which Nokia N73 cannot get rid of, but this is almost the only thing (except for the resolution) in which a rare cameraphone is inferior to modern devices. The Doogee photo shows the graininess, looseness of the contours of the portrait of the first American president. Others have it too, but there the outlines are smoother, the colors are more uniform. What is also noteworthy is that the surname under the portrait is best read in the photo with the N73. Of course, knowing that this is Washington, you can restore the text in your head from Doogee's photo, but the difference is noticeable.
Conclusion
As the comparison of the Nokia N73 camera with much newer devices shows, this smartphone still has "powder in the powder flasks". Despite the huge age difference by the standards of electronics, the device did not yield to the cleanest more relevant gadgets. Of course, a very modest hardware makes itself felt, and such shortcomings as noise and artifacts appear, but even taking this into account, a much newer state employee could not get around it. And this only confirms that no one has canceled the laws of optics, and whatever the software, first of all, the quality of images is determined by the capabilities of the matrix and the lens, and not by megapixels and post-processing capabilities.
And also Rolls-Royce.
The BMW N73 engine belongs to the NG series and is distinguished by the presence of the following systems:
- double VANOS;
- intake valve drive with a change in the stroke of the gas distribution mechanism with 4 valves per cylinder;
BMW N73B60 engine
6-liter engine that was installed on / / / Hydrogen 7 E68.
BMW N73 engine specifications
| N73B60O1 | |
| Volume, cm³ | 5972 |
| The order of the cylinders | 1-7-5-11-3-9-6-12-2-8-4-10 |
| Cylinder diameter / piston stroke, mm | 89,0/80,0 |
| Distance between cylinders, mm | 98,0 |
| ∅ main bearing of the crankshaft, mm | 70,0 |
| ∅ connecting rod bearing of the crankshaft, mm | 54,0 |
| Power, h.p. (kW) / rpm | 435 (320)/6000 |
| Torque, Nm / rpm | 600/3950 |
| Liter capacity, kW / liter | 53,58 |
| Idling speed, rpm | 550 |
| Rotation speed limited by the regulator, rpm | 6500 |
| Compression ratio: 1 | 11,5 |
| ∅ inlet valve, mm | 35,0 |
| ∅ exhaust valve, mm | 29,0 |
| Intake valve travel, mm | 0,3-9,85 |
| Exhaust valve travel, mm | 9,7 |
| Engine weight, ∼ kg | 196-205 |
| Knock control system | Yes |
| Injection pressure, bar | 50-120 |
| Engine management system | 2 MED 9.2.1 units + Valvetronic control unit + 2 HDEV control units |
| Exhaust gas compliance | Euro 3 / Euro 4 / LEVII |
| Savings compared to M73 | 12% |
BMW N73B67 engine
6.7-liter power unit installed in the Rolls-Royce Phantom since 2003.
Parameters of the 6.7-liter N73 engine
Engine structureDescription and feature of the N73 motor
A separate housing is installed for each bank of cylinders air filter... The air supply for each row is between the headlamp and the cooling module via a suction snorkel from the radiator duct.
The air volume is approximately 10.5 liters for the housing with an air filter, the replaceable element of which has a flat grille for reinforcement.
Each cylinder bank has its own throttle valve.
They are not involved in engine load management. This control is carried out by changing the travel of the intake valves.
The intake system is a complex assembly made of magnesium alloy by casting in a shell. The individual parts of the intake system are connected to each other using glue and threaded connections. The use of a magnesium alloy resulted in a significant reduction in weight compared to aluminum.
The catheters are separated by partitions, resulting in additional resonance cavities for each row of cylinders.
The crankcase gases from combustion are fed from the crankcase to a labyrinth oil separator in both cylinder head covers.
A control valve is installed on the intake system of each cylinder bank, which is connected by a hose to the cylinder head cover. It maintains a vacuum of 0 to 40 mbar in the crankcase.
The control valve has a diaphragm in its plastic body, which on the one hand is influenced by a controlled vacuum and spring force and, on the other hand, by atmospheric pressure.
Each bank of cylinders has one 2.8 liter front silencer, which operates on the absorption principle.
A six-to-one exhaust manifold is installed for each bank of cylinders. Together with the catalytic converter housing, the exhaust manifold forms a single unit.
A secondary air valve (SLV) is installed on the side of the cylinder head for each bank of cylinders.
The N7З engine has a total of four lambda probes.
A 4-V ribbed belt is used to drive the air conditioner compressor, and a 6-pin ribbed belt is used for the main drive.
Each belt drive has a tensioner with tensioner roller and torsion bar tensioner.
The holes for the high pressure injectors are on the intake side.
Both exhaust camshafts drive the high pressure fuel pump via a triple cam via a poppet.
The cylinder heads are made of aluminum. They are cast in a chill mold.
The cylinder head gasket is a three-layer steel rubberized seal.
The bolts for fastening the cylinder head of the N7З engine are all the same: elongated bolts M10x160, and in case of repair, must always be replaced.
The lower part of the timing block is attached to the cylinder head with M8x45 bolts.
The engine has a cover with BMW logo on the intake system. In addition, there is a front panel between the radiator cap and the cap with the emblem.
The cylinder head covers are made of magnesium alloy. The cylinder head covers are specially coated to protect against corrosion.
The valve drive is largely identical to that of the N62 engine. Constructive changes in relation to the M62 engine concerned the main bearing bridge with the intermediate shaft of the Valvetronic electric motor, the torque compensation springs with a rectangular cross section and a triple cam exhaust camshaft to drive the high pressure pump.
The camshafts are cast in bleached iron. They are made hollow to reduce weight. To compensate for imbalances in the valve drive, the camshafts are equipped with balancing weights.
The exhaust camshafts have triple cams to drive the high pressure pumps.
With Valvetronic, the intake valve travel is fully adjustable.
The Valvetronic motor is screwed through the intermediate flange to the bearing bracket and has a hexagon that fits into the seat on the intermediate shaft.
The camshafts of the intake and exhaust valves of the engine are equipped with the infinitely variable VANOS vane units already known from engines of the NG series.
The vacuum pump generates a vacuum that is used to maintain the braking force, control the muffler flap and control the auxiliary air flaps. It has the same design as the M62 engine pump and is driven by the exhaust camshaft via the VANOS unit (cylinder bank 1-6).
In the M7Z engine, the entire valve drive was carried out using one bushing chain. On the N73 engine, the camshafts are driven by a separate bushing chain for each cylinder bank.
The crankcase design is similar to that of the N62 - a single-piece open-back crankcase made entirely of AluSil, where “Open-Back” means that the water jacket is open from the top.
The crankshaft is forged, steel, and the material and dimensions of the crankshaft meet the high requirements for cars in terms of comfort (noise, vibration).
Each shaft elbow has two counterweights to compensate for the moving masses (12 counterweights in total).
The axial thrust bearing is a thrust bearing mounted on the gearbox side.
The crankshaft has seven bearings, where the seventh bearing is also a thrust bearing.
The pistons N73 are cast, weight-optimized with a convex bottom and valve disc recesses in the bottom.
The oil sump of the N73B60, like the N62, consists of an upper and a lower part.
To control the functions, the N73 engine has a total of 5 control units interconnected by the local CAN bus:
- on this control unit MED 9.2.1 for each row of cylinders;
- one Valvetronic control unit;
- one high pressure injector control unit for each cylinder bank;
The N73 engine was the first in the series to receive a gasoline direct injection system.
The combination of Valvetronic with the concept of direct injection with exhaust gas aftertreatment at lambda = 1 has a very important advantage, in contrast to the lean-burn GDI engines with DeNox catalysts: the engine does not depend on the sulfur content of the fuel and can therefore be used in all countries without fear of negative consequences.
With direct injection, high-pressure fuel (30 to 100 bar) is injected directly into the combustion chamber.
The main advantage of direct injection is that it allows for stratified lean-burn operation at partial load.
The engine runs using a homogeneous mixture. This means that the fuel-air ratio is kept stoichiometric, just like with intake manifold injection.
The use of a homogeneous mixture allows the installation of a conventional aftertreatment system with a three-way catalyst and a refueling with sulfur-containing fuels.
Thanks to this, cars with this engine can be used in all countries.
Fuel supply to the rail is provided by high pressure pumps (HDP), which are driven by the exhaust camshaft via a triple cam via a poppet.
The high pressure injectors are connected to a hydraulic accumulator (Rail) installed for each cylinder bank. Rail lines are not connected to each other.
The high-pressure pumps are mounted on the cylinder heads and are driven by the exhaust camshaft via a triple cam via a tappet.
Fresh air is sucked in like a diesel engine, without throttling. Fuel injection is carried out later, only during the compression phase, and a mixture close to stoichiometric is formed in the area of the spark plug.
Since a flammable mixture is only needed in a small confined space, and the main part of the combustion chamber can be filled with an extremely lean mixture, it is therefore possible to operate without throttling.
BMW N73 engine problems
- shakes the engine at idle speed: the reason is incorrect operation of the Valvetronic system;
- Valvetronic failure: possible reason- the electric motor is faulty, which turns the rocker control shaft;
- The replacement air filter element must be replaced every 100,000 km.
- Spark plugs must be replaced every 120,000 kilometers (on US vehicles, every 100,000 miles).
- Timing chains need to be changed every 150,000 km.
- After 200,000 km the VANOS system needs to be changed.
BMW N73 engine has been replaced with.
Once upon a time, when computers were large and monitors were small, someone guessed to install a simple camera module in such a gadget as mobile phone… It is a little exaggerated, but the fact remains: the first cameras took inferior images with CIF resolution (352x288) and less. Modern camera phones (there is no other way to call cameras with an integrated GSM-module) take not only a good photo, but also a video of quite decent quality.
Design and ergonomics
Of course, first of all, in the N73, attention is drawn to the lens cover. It takes up a significant part back cover phone and, in addition to performing the main, protective function, launches the camera interface when opened and turns off when closed. Thus, the user can quickly capture the moment he wants. A large "eye" of the lens and a small one are hidden under the shutter. It is the flash, not the LED flashlight. Nice feature: the set comes with a proprietary cloth (with the logo of the vendor and lens manufacturer) for wiping the lens and display.
It is clear that the camera is the centerpiece of the device (thanks to autofocus and glass lenses from Carl Zeiss). It influenced the ergonomics of the N73 case, and also provoked the appearance of dedicated keys. The shutter button works as in a real camera (focus + shutter release), and the volume rocker turns into a zoom rocker. These elements are arranged in such a way as to be under the user's fingers in camera mode: on the right end, a little further from the edge (it is assumed that the camera is used in a horizontal position).
For easy access to the footage, there is a separate button next to the camera key. It launches an extremely convenient and functional photo / video organizer.
As befits any device based on the latest revision of the S60, the N73 is equipped with special keys for accessing quick menu, undo / delete, keys to access uppercase characters and menus. They frame the control keys and the numeric keypad with a slippery silver outline. However, it is quite convenient to press them, which cannot be said about the alphanumeric buttons. Despite the tiny bump-curbs, the latter are installed too close to each other, which provokes frequent pressing together with the required and adjacent keys.
The joystick and control keys are excellent in terms of ease of use, but their convex shape and the effect of volume it creates, elevations above the body are a little out of the general design concept.
Another key is located on top end between two speakers covered with stylish metal mesh. It is responsible only for enabling / changing the profile and does not carry additional functionality such as a connection manager in UIQ 3 smartphones based on the same Symbian OS version.
The speakers correspond to the multimedia status of the N73: very loud, support stereo surround sound, and produce clear sound even at maximum volume. Upon closer inspection, the secret of sound quality and volume was revealed: additional speaker installed also at the bottom, just above the interface connector. This arrangement of these elements is not accidental, since it is these parts of the case that are least often covered or pressed.
Slightly to the right is a light sensor (to determine the required backlight level) and a VGA camera window for video calls.
An IrDA module is installed on the right side of the N73 (a rare event in a modern multimedia model), and at the very bottom there is a strap attachment. A relatively large device is definitely not worth hanging around your neck, but the included leather wrist strap will surely appeal to someone.
The bottom side has a slot for a miniSD memory card, an interface connector and a memory port. Users will appreciate this performance when the smart, connected to a PC or headphones, will have to be recharged.
The huge display (proudly called the viewfinder in the manual) takes up the bulk of the N73's faceplate. The resolution of 320x240 pixels will seem sufficient to many, and the screen characteristics are excellent. But after close communication with the top Nokia models, minor flaws become noticeable. These include a slight loss of brightness and black distortion at relatively large viewing angles. Another embarrassment is color rendering. The colors are very juicy and bright, but sometimes the gradations of some shades break up like a ladder, the transition is not smooth enough. The display does not reach the level of the most expensive models, but it is good for its category. Most users will notice the above nuances only after a long search.
The case looks a little bulky, an abundance of all kinds of buttons, connectors and indicators different shapes and designs negatively affect the overall design concept. Perhaps other color solutions will be devoid of such a drawback, the design will be better traced. The plum option may meet our expectations. The choice of this color is due to the shade of the main part of the case: a velvet blue-plum coating is applied to the black base. Besides the interesting color effect, it is very pleasant to the touch. I would like to constantly twirl the device in my hands, but it fits in the palm of my hand, by the way, it is not very convenient. Most likely, this is due to the thickness of the case, so only people with small palms will probably feel discomfort.
Menus and functions
The predictions of many analysts who predicted the future for "smart" phones are coming true. Thanks to Nokia smartphones S60-based devices have evolved from devices for professionals or businesses to small multimedia computers for a wide audience. It is a mistake to think that a smartphone is more difficult to use than a telephone. Even if difficulties arise, context-sensitive help is built into the interface and a separate application is installed, in which you can find answers to many (if not all) questions about use and functions, and the settings wizard will help you make the necessary settings.
The menus and main functions of Symbian 9.1 devices with S60 interface are detailed in the reviews of similar models, so let's pay attention to the most interesting and unique features of the N73. First of all, the gallery is interesting, because it is there that all the footage is stored. The program allows you not only to access your media collection, but also automatically compose a musical slideshow with beautiful transitions, which can be saved as a video clip. Multimedia files can be sent to friends via MMS (automatically cut to the required size), Bluetooth, IrDA, or upload to the Internet (Flickr service). The fact of automation of the process is pleasant: you do not need to invent something, choose transition effects, arrange slides or cut a video. You just need to pick up the music, and the rest will be done smart program... The results are impressive in quality and interesting. I don't want to use the usual viewing mode anymore. It is noteworthy that the program works in full screen mode with a display rotated 90 degrees, making viewing extremely convenient.
For clarity or when searching for the required material, the carousel mode is useful, when the main part of the screen is occupied by an enlarged fragment, and on both sides there are 5 reduced ones. Thus, it is easy to find the desired photo or video. There you can also compose albums, upload photos to the network or transfer to a compatible device.
Also in the gallery are catalogs of music, voice recorder recordings, streaming links, presentations and a general "vinaigrette" of all multimedia files.
The N73 has a standard player. From the sound settings, there is an equalizer, which has little effect on the audio stream. Nevertheless, even through the included headphones, the music sounds quite pleasant, albeit not loudly. You will have to contact local kulibins to cross your favorite "ears" and a standard headset, or buy an adapter for a standard minijack, since the vendor offers such an accessory.
Nice set of additional software that allows you to open almost any multimedia or office document... Nokia N73, like all the latest models of the N- and E-series of the manufacturer, comes with RealPlayer, FlashPlayer, PDF Reader and a full-fledged office suite QuickOffice.
The network functions of the smartphone are developed in the same way as the multimedia ones. The HTML browser that first appeared in the Nokia N80 is also included in this model. WEB-sites do not adapt to the display size (as, for example, in OperaMini), a part of the site and a mouse cursor controlled by a joystick are visible on the screen. With active scrolling, a map appears on which the current position is clearly visible. The browser supports the simultaneous download of several files with the ability to pause and resume (a kind of Download Manager).
For the first time, the N73 introduces the 3D Signals application, which allows you to play a ringtone with a variety of spatial effects and playback paths. Audio and midi files are supported. The application is interesting, but the smartphone categorically refuses to work with it and goes into reboot with its active use.
Also, an antivirus appeared in the smartphone for the first time. When launched, it downloads virus databases.
Voice control works taking into account the peculiarities of the Russian language and menu abbreviations: "disp. device-in "is defined as" device manager "," new mess. SMS ”and others are also detected correctly. The microphone sensitivity and speech recognition quality were excellent. The dictaphone works well - it even distinguishes muttering (of course, at a reasonable distance from the sound source).
So, the N73 can rightly be called a multimedia computer with a full set of necessary programs. The need to process complex effects in real time required installation powerful processor, which is confirmed by the following tests.
Let's compare with the Nokia E70.
Camera
As befits a real camera, the N73 allows you to set the following shooting modes: auto, custom, macro, portrait, landscape, sports, night, night portrait. Camera resolution - 3.2 megapixels.
