Samsung Galaxy S7 edge has just been released in China. As the new Anthure King, its photographic performance naturally attracts much attention. 1.4 μ m unit pixel size+F1.7 aperture, but the number of pixels is reduced to 12 million. All the questions can be condensed into two points: Is there any decline in daytime discrimination? How strong is weak light imaging?
If you just want to see the conclusion, just drag it to the final conclusion. The conclusion is very simple and clear
The Galaxy S7 edge retail version (SM-G9350) and Galaxy S6 edge port version (SM-G9250, ZCU2COLB, Android 5.1.1) are used in this test for reference only.
Because the daily use machine is S6 edge and iPhone 6s, compare them first, and then compete with the real flagship.
Click the picture to view the large picture directly.
parameter
Pixel size comparison of several mainstream Sony sensors (wiki screenshot)
After using the IMX240 for two years, Samsung launched the Sony IMX260 sensor on the S7/S7 edge (from S5 to Note5, both ISOCELL and IMX240 are mixed). IMX260 is 12 million pixels, 1/2.5 inch, 1.4 μ m unit pixel size, F1.7 aperture lens, and supports optical anti shake.
Although the total number of pixels has decreased from 16 million to 12 million, the sharp increase of unit pixels and the large aperture of F1.7 make people can't help but expect its weak light performance (as a contrast, the iPhone 6 Plus is 1.5 μ m with optical anti shake, and the Sony IMX377 with Nexus 5X/6P is 1.55 μ m without optical anti shake).
Photo experience
Camera interface: HDR or night view can still be recognized automatically, and users only need to press the shutter. Its app has little difference from Note5 and S6 in function and appearance, so I won't repeat it here.
Focus: This IMX260 is equipped with Dual pixel focusing system （ Dual Pixel The most famous case is Canon's mid-level SLR 70D). All pixels can be used for focusing, which can be loosely regarded as the phase focusing of the violence enhanced version. The actual focusing performance of the machine can only be described in seconds.
Both daytime and ultra weak light can focus very quickly, The iPhone 6s, which had been in focus very quickly, felt slow in front of it Its extremely weak light (nightclub level weak light) focusing speed is even faster than the daytime focusing speed of many thousand yuan machines without phase focusing... Basically, the shutter can be pressed at the moment of facing the target. Manual refocusing is meaningless for S7 edge.
Imaging speed: no obvious difference from the previous generation, The processing speed after triggering night scene mode is even slightly slower than S6 edge Due to the reduction of pixels, the size of the sample has changed from 5-6Mb/piece to 3-4Mb/piece from the previous generation. This should be good news for users who are short of storage space. However, if the sample size is smaller+the Snapdragon 820's ISP is upgraded, the imaging speed should be faster. This may be because Samsung has changed the algorithm or has not yet adjusted well.
Wide angle and lens quality
Comparison of sample EXIF information
The equivalent focal length of the iPhone 6s is 29mm, and the S6 edge is 28mm. Samsung has even expanded the wide-angle equivalent focal length to 27mm with the S7 edge. The smaller the focal length is, the larger the wide-angle is. The effect is that the S7 edge has a larger range than the other two cameras.
Longitudinal wide-angle comparison of three machines
Upper left corner edge deterioration comparison
In terms of edge imaging, the S7 edge has a large aperture of F1.7, but except for the obvious wide-angle distortion, the edge degradation is relatively slight, and the degradation control is between the iPhone 6s and S6 edge without optical anti shake, which is ideal.
Glare control comparison
The iPhone 6s performs better, while the S7 edge and S6 edge are not different.
Metering and white balance
Sun Scene 1
Sun Scene 2
Sun Scene 3
Light Scene 4
Light Scene 5
Light Scene 6
Light Scene 7
Light scene 8
Light Scene 9
Light Scene 10
Light scene 11
Light scene 12
Weak light and ultra weak light scene 13
Weak light and ultra weak light scene 14
Weak light and ultra weak light scene 15
Weak light and ultra weak light scene 16
Weak light and ultra weak light scene 17
Weak light and ultra weak light scene 18
Light metering: the iPhone 6s light metering is slightly dark, but in weak light, the brightness is obviously insufficient; S6 edge and S7 edge are very close to the light measurement under normal light in the daytime, and both are close to the naked eye, while S7 edge will be significantly brightened in the night scene mode triggered by ultra weak light scenes;
White balance: The iPhone 6s tend to turn blue in most scenes, while the S6 edge is warmer and slower, and the S7 edge is bluer. The range of the latter two is not very large, but the S6 edge's hair color will be more pleasing when photographing people and food.
Saturation contrast: S6 edge is the style of reality restoration. The contrast and saturation of the image are visible to the naked eye. The iPhone is slightly more beautiful, and S7 edge is the most beautiful of the three.
Daytime discrimination
For a mobile phone, the number of pixels is fixed. The larger the wide-angle, the lower the number of pixels for the same scene, which affects the discrimination. It can be predicted that if other conditions are consistent, the S7 edge with the largest wide-angle will have lower discrimination than S6 edge or even iPhone 6s.
The focus of all the samples below is in the middle, which is the central magnification. All samples are arranged from strong to weak according to ISO and shutter:
Sun Scene 1
Sun Scene 2
Sun Scene 2
Sun Scene 3
Daylight Scene 4
Sun Scene 5
Sunlight Scene 5 Top Center
Sun Scene 5 Center Right
Indoor Scene 6
Light Scene 7
Light scene 8
Indoor Scene 9
Indoor Scene 10
Indoor scene 11
Light scene 12 (S7 edge sharpening even makes the font edge appear white)
Light scene 13
Light scene 14
Light scene 15
Light scene 16
Low light scene 17
Weak light scene 18
Weak light scene 19
Enlarge the center of weak light scene 19
Weak light scene 20
Extremely weak light scene 21
Extremely weak light scene 22
Extremely weak light scene 23
Extremely weak light scene 24
Extremely weak light scene 25
Extremely weak light scene 26
Extremely weak light scene 27
Reamplify the center of extremely weak light scene 27
Daylight discrimination: perhaps to cope with the decline in discrimination caused by large wide-angle, S7 edge has increased the sharpening radius and intensity, and sharpening is very obvious (even the font edge appears white in Scene 12). The direct effect is that the scene edge is clear and has high contrast, but it still cannot completely cover up the problem of insufficient pixels per unit scene. Sharpness can only be said to be a winner or loser with the iPhone 6s. The details are less than S6 edge, and it is more stressful than Note5, the peak of discrimination. In addition, when the scene is magnified to the same size, the S7 edge magnification is always larger than others, and the image noise is also the most obvious.
Light discrimination: The S7 edge is still weak compared with the iPhone 6s and S6 edge indoors and in strong lights However, the turning point probably occurred in Scene 13 (the light intensity of this scene is similar to the exhibition spotlight in the museum, which is much weaker than the normal light). In this scenario, the S7 edge only has an ISO of 160, while the other two machines are both at 200. The lower the low light scene, the more obvious their shutter/ISO gap, and the S7 edge begins to dominate, and the weaker the light, the greater the gap.
Weak light and extremely weak light: This is the absolute field of S7 edge. Especially after the night scene mode is triggered under extremely weak light, although the picture is brightened like a night vision camera and has many noise points, you can really see many details that other mobile phones cannot even see with the naked eye . For a night club or many night scenes, it is much more important to take photos than to look like the naked eye. The author also supports Samsung's algorithm.
PS： "Extremely weak light" has not been clearly defined use iPhone 6s ISO and shutter measurement, ISO exceeds 2000, shutter is lower than 1/17s, which is the weakest sensitivity level in 6s , further down, the brightness of the picture cannot be guaranteed. This is probably the light intensity in the corner of the bar and/or the street where the street lights are insufficient.
summary
The pictures taken by Samsung Galaxy S7 edge are simple: The daytime is not as good as that of the previous generation. Extremely weak light shows frenzy 。
The photo taking experience is pleasant and incisive, with a high film rate, accurate metering and white balance, but not as stable and pleasing as the previous generation;
Wide angle, high image sharpness, contrast and saturation. The daytime and strong light discrimination can not even win the iPhone 6s (the latter's daytime performance is close to that of the iPhone 6s Plus), and there is a certain gap between the company and its own or even other Android flagship;
You can only recover your face in low light, The weak light and extremely weak light scenes show unprecedented ferocity, far away from the S6 edge.
In general, apart from the comprehensive progress of focusing, S7 edge is used to "exchange" weak light performance during the day, but the use range of the latter is far less than the former. So the bad news is: For ordinary users, perhaps Note5 is still the most powerful and balanced flagship machine . Their direct comparison will be completed in the near future, please pay attention.
