Originally Posted by
jerry brown
With the review videos about Nokia Lumia 920 outflow on the network recently, Nokia 920’ day shooting performance is almost regarded as a worm by people, for this, I am also doubt its real photo performance till I got it, and after a week of the experiment, I make a summary that my real feeling on the photo performance of the Nokia 920 combined with my understanding of photography and give you some information that many process evaluation does not mention.
Now, I put the mobile camera into two parts: the photosensitive chip (sensor) and lens.
The photosensitive chip (sensor) of Nokia920
First, I talk about the actual imaging capabilities of Nokia 920 sensor:
In fact, Nokia 920 sensor only has one drawback that white balance, Nokia 920 is more sensitive at white balance processing and the white balance is really easy to drift when you are in the actual shooting. This is indeed a problem result of the relevant software, if Nokia is willing to fix, it can be avoided completely. In addition, in a week I shoot, white balance drift problem did not affect the actual film.
Besides, The 920 has a very wide color performance, for mobile phone users, it is essentially improved photo availability. In particular its color range is wider than some other mobile phone, and rarely appear that the color are packed in the same range. Straight out color performance, close to the DC texture.
Lens of Nokia 920
The latest firmware of Nokia Lumia 920 solved provirus lens focusing problems; it can say that most of the time the imaging blur problem of Nokia 920 comes from the 920 existing firmware lens focusing is easy to slightly lose focus. And this problem is easy to encounter when in the plane composition scenes, but when take some longitudinal depth of scenes; the question is not easy to appear.
920 are using the F2.0 large aperture lens, but the lens itself is small, so the edge of the depth field appears the degradation of image quality, it is a normal phenomenon. This called "dispersion" in the photography, and this comes from the weakened light control ability of the large aperture lens at its edge, and in the old firmware, slight defocus plus edge dispersion will have a similar effect.
The really short board of 920 lenses, and which can't be modified is lens flare. This problem leads to 920 in the evening can not shoot street lamp, everyday situations, have little effect, but a portion of the patterned may produce a flush. This only can be avoiding through the photo skill.
All above, I have described 920 photographed three weaknesses, focus, and white balance, glare, but also give the reasons for these problems and influence. The former two are the software problem, the first has been confirmed to be modified, the second are still unknown whether to be modified, and the third can not be modified...
So now I want to say that Nokia 920 is a truly mobile phone can give a different photo experience.
Nokia 920 provides optical anti-shake, after testing its anti-shake effect has a very high success rate (1/3 seconds is the limit) when the shutter in 1/4 seconds, according to the actual focal length of the lens conversion, its anti-shake effect reached a level of three. Before I thought Nokia 920 is the inertial anti-shake, but from the point of practical effect, it is indeed an acceleration induction plus mechanical active anti shake to achieve the results.
So if you take 920 and iPhone 5 comparison, white balance and glare pull Lumia 920 back so that 920 takes the photos in the sun may be a little worse; in other cases, the difference between the two is entirely change the "may not" into "may".
920 photos is a worm during the day? What is the definition “during the day”? Because it sounds in the half of the situation during the day the 920 pictures are not good. But the problem is, are you under the sun all the time during the day? The brightness of the sun is very high, if the direct environment brightness is 100EV, then you may enter into a room, or even just entered a shade, the brightness may come down to 10EV even following, difference will reach ten times even dozens of times. To the human eye, This change may not be sensitive, but the camera, is different.
If the photo shutter is 1/500 seconds under the sun, maybe when you take a picture of the flowers which are in shade, the same ISO, photo shutter can reach 1/50 seconds even lower. Then ISO's ascension is inevitable. While the anti-shake can also be play a huge role in here. This is the key to Nokia 920’ high success rate is the in the real process of providing. Such scene, on the daily photograph for coverage, its scope may be reached more than 60% of your daily photo.
And, Nokia 920 can train people a habit of shooting in the evening. For many people, I believe he probability of taking out a mobile phone to take a picture in the evening is very small, even if shoot, they often just takes a big picture without any serious, there will be few people thought playing a good composition at night, lighting, take a little "works". Because they often get disappointed photos after pressing the shutter. But to the people who were understanding photography, when in the evening, it is easy to take the effect of light and shade. And when you get a Nokia 920, all will be different.
With anti-shake technology, you also can be with a lower iso in the same light. For example, yesterday I bought a CD album, and want to remake a sealing surface. My bedroom light environment is the equivalent focal length, aperture in 100mm F2.0 SLR body shake under ISO need to 800 to promise not to paste. And then I took my Nokia 920, ISO forced to 100, to 1/4 seconds shutter speed to get, the effect is very satisfactory. ISO 100 to 800 EV gap is 3 archives, focal length conversion safety shutter 100mm to 28mm is 2 archives, it is meaning that 920 of the anti-shake performance is also better than my SLR gear.
Conclusion
Make the impossible into possible, greatly improve the success rate of shooting, and has broad color level, 920 is very close to the high end of the DC in the live-action performance, at the same time it also has a mobile device to facilitate processing and sharing advantages. I use a week later, I can confirm that it is the phone which is closest to DC. Nokia Lumia 920 gives my shooting experience that some other mobile phone such as Samsung Galaxy note 2 , iPhone 5, HTC one X etc can not give me.
