The machines in this comparison include Samsung S7 edge and vivo Xplay6 with highly similar sensors, the same model as the Prince Pixel XL, the Xiaomi 5s with IMX378, and the Meizu PRO 6s with IMX386+four axis optical anti shake.
At the beginning of 2016, the flagship IMX298 standard configuration has not passed a year. Sony has successively released five new generation sensors, including IMX260/378/386/398/362, which all adopt the route of large unit pixels, all of which are 12 million pixel 4:3 frames. Except for the IMX378 with a diagonal length of 1/2.3 inch, other machines are equipped with optical anti shake.
Photo experience
The number of pixels decreases, The ISP performance in the SoC has been growing all the time, making these machines have fast imaging speed. Except for the PRO 6s, all other machines have the best photography experience.
Among them, the full core focusing S7 edge and vivo Xplay6 are far faster than the focusing speed of other products. The former can be automatically enabled silently regardless of HDR or night view mode, and the photo taking experience is still unparalleled;
In addition to the automatic multi frame synthesis of the night scene, Xplay6 also provides the manually opened night scene mode. The latter has a good handheld film rate, but the imaging is slightly slow, and there will be a small problem of frame loss, so experience points will be deducted;
Xiaomi has a weak focus on the point light source under 5s extremely weak light, which has a very high probability of not focusing, and there is no optical anti shake. The reduction of film yield is relatively obvious under weak light. Its main bonus items are outstanding shutter response and imaging speed, The processing speed of HDR and night scene algorithm is also fast, and the experience is extremely pleasant;
Meizu PRO 6s has a slightly stronger weak light focusing ability than Xiaomi 5s, and the weak light film forming rate is close. However, Meizu software has many problems: there is still no automatic HDR function, and manual light measurement is too sensitive, which has a great chance of being brighter. Although the test version of Flyme 6 finally has a slider to quickly adjust the light measurement, the current version has not yet. The shutter response and imaging speed are slow, and the photography experience is dropped a long distance.
In contrast, all the machines are handheld, and the focus is in the center of the picture. S7 edge、Xplay6、 Xiaomi starts automatic HDR in 5s, The Xplay6 weak light selects the night view mode sample, and Meizu PRO 6s selects the ones with better performance from HDR and default modes as representatives. The following descriptions are arranged from strong to weak.
White balance/metering/tolerance/saturation contrast
PS: This part of the proof sheet is used to compare the white balance, photometry and color saturation, and the discrimination proof sheet is concentrated in the last part.
It is estimated that everyone is familiar with S7 edge, the famous benchmark. Here is a brief summary of its characteristics. It will not be explained specifically below: daytime and weak light metering and white balance are reliable, and the lighting scene will tend to be yellow and red, which belongs to the eye pleasing type. After the nightscape mode is enabled, it will be obviously bright. The machine itself has a high tolerance, HDR algorithm tends to improve dark details, but the contrast of weak light scenes will be reduced. There are obvious sharpening traces, and the discrimination is good. The dark details and discrimination are exaggerated after the extremely weak light triggers the night scene mode.
Daytime Scenario 1
Daytime scenario 2
Daytime scenario 3
Daytime scenario 4
Daytime Scenario 5
Daytime scenario 6
Indoor lighting scene 1
Indoor lighting scene 2
Indoor lighting scene 3
Light Scene 4
Weak light scene 1
Weak light scene 2
Weak light scene 3
Weak light scene 4
Metering, white balance and saturation:
4 sets of machines, The white balance and photometric stability of Xplay6 are the closest to S7 edge. The white balance is slightly elegant, but the color saturation is higher than that of other machines, especially the manual night scene mode. Its color saturation is far higher than the naked eye, which is inconceivable. Even under ultra weak light, the automatic metering mode is very close to the naked eye. After the manual night scene is turned on, the ultra weak light scene will be as bright as the S7 edge;
Xiaomi's 5s white balance is also relatively stable and accurate, and many scenes are even better than S7 edge The Xplay6 is even more accurate, which overturns our previous impression of taking pictures of Xiaomi. The color saturation is normal, but the metering tends to be uniform and bright;
The white balance of PRO 6s is also good, The saturation is slightly higher than that of Xplay6 The main problem is photometry. The latter has no tendency to unify. There is a high probability that it will be slightly darker in the sun. The indoor light will be darker or brighter depending on the brightness or darkness of the target scene. When it is necessary to manually correct the metering, because there is no slider to quickly adjust the metering, you have to manually click different areas of the screen to try different metering points. The use experience is poor.
Tolerance and contrast:
The HDR algorithm of Xplay6 performs well, but the tolerance of the background is slightly lower than that of Xiaomi by 5s. In addition, the contrast is slightly increased deliberately. Although the picture looks more transparent, it will sacrifice some dark details;
With IMX378's "big bottom", Xiaomi 5s will have good tolerance even without HDR, and the trigger threshold of its automatic HDR is also significantly higher than other machines. Even the scene of sunset in the evening has not been triggered (Xiaomi's HDR is generally effective in the daytime, so the author very much agrees with this practice...). Without the help of HDR, the small problem of slightly brighter metering just makes up for the dark details, but highlights are often sacrificed;
For the 386 on Meizu PRO 6s, the unit pixel size is a little smaller than the previous machines, and the actual tolerance is indeed at a disadvantage. Even if HDR is not turned on, its picture level and contrast are lower than other machines (such as lake proof). In addition, Meizu's current version of HDR algorithm has some small problems, which makes it suffer more.
Discrimination/noise control/texture contrast
PS: Click the picture to view the large picture
Daytime scene 1 central zoom in
Daytime scene 2 central zoom in
Daytime scene 3 central zoom in
Indoor lighting scene 1 central magnification
Indoor lighting scene 2 central magnification
Indoor lighting scene 3 central magnification
Indoor lighting scene 4 central magnification
Weak light scene 1 central amplification
Enlarge the top right center of weak light scene 1
Weak light scene 2 central amplification
Weak light scene 2 central amplification
Extremely weak light scene 1 central amplification
Extremely weak light scene 2 central amplification (Xiaomi cannot focus for 5s)
Extremely weak light scene 3
Extremely weak light scene 3 central amplification
Extremely weak light scene 4 central amplification (S7 edge out of focus)
Discrimination:
They are all 12 million pixel sensors of the same generation. In fact, there is nothing comparable in daytime discrimination. The main difference is in sharpening and noise reduction algorithms. In addition to PRO 6s, the other three machines have obvious sharpening marks, and each has its own victory or defeat.
Xplay6 uses more powerful noise reduction algorithm. After the light becomes worse, and the contrast and color saturation are high, the discrimination is better than S7 edge, but the dark details are at a disadvantage. In extremely weak light, although the saturation and noise reduction smearing of the manual night scene are against the sky, the absolute discrimination is still inferior to S7 edge;
The light and weak light discrimination power of PRO 6s beat Xiaomi 5s unexpectedly, and its noise reduction algorithm is extremely light. Although the edge of the object will become more "lax", the discrimination power is stronger than Xiaomi 5s, which is full of ISO and heavy hand.
Noise control/texture contrast:
S7 edge and Xplay6 not only have highly similar sensor parameters, but their daily shutter/ISO strategies are the same. Many scenes are identical, and even the parameters left after extreme weak light multi frame synthesis are extremely similar (both 1/4 second shutter, ISO will only display 1250 at most), However, there are 1271+1/5s and other combinations in Xplay6 manual night view mode, S7 edge basically takes 1/4s to fight under ultra weak light.
However, in complex indoor lighting scenes, their metering will be slightly different, and the relationship will be complicated. The main feature is that S7 edge is more active than ISO, and the ISO of many scenes will be tens to 100 lower. The difference between their noise reduction and detail texture is mainly caused by the brutal noise reduction and smearing algorithm of Xplay6, which is the only product that can compete with LG's noise reduction algorithm for the time being. It is difficult to see large noise points in light or even in extremely weak light. When encountering a large area of solid color such as the sky, it is as clean as a painting no matter in the day or night.
After the light of PRO 6s becomes worse, the overall performance of the noise reduction algorithm is no less than that of Xiaomi 5s, The noise reduction is effective, the smearing is not very heavy, and a lot of details can be retained. his It can also achieve a 1/4 second shutter (the mainstream is faster shutter for multiple shots, and only the exposure time and are displayed at the end), which can effectively reduce the demand for ISO. Although the ISO of many occasions is slightly higher than that of S7 edge/Xplay6, it is much better than that of Xiaomi 5s when the shutter can only be pressed to 1/17s at the minimum, and the film forming rate is no lower than that of Xiaomi 5s.
In addition, Meizu's optical anti shake+386 (1.25 μ m unit pixel) scheme can retain more color details than Xiaomi's non optical anti shake 378 (1.55 μ m) scheme, which is about 2 levels lower than ISO, and dark light also has good color saturation, which is excellent. The main problem of this scheme is that the bottleneck of unit pixel size will still be encountered under extremely weak light, and the situation where you can barely see your fingers will still be lost to Xiaomi for 5s due to insufficient exposure
Xiaomi 5s has no optical anti shake, the noise reduction algorithm is laborious, and the extremely weak light is focused to catch chickens (several scenes of the lake side weak light can not be focused smoothly even if they are manually focused for many times, or even focusing toward the sky infinitely). In order to ensure the film rate, the shutter speed is always one or two gears higher than other machines, and only ISO can be used. Almost all indoor lighting scenes are above 300, and the light is slightly darker. 600-800 is common, and the highest ISO is up to 6400. The cost of the heavy handed daubing algorithm is that many details have also been erased.
Summary
The Xplay6 has a balanced performance. In addition to the photographic experience, dark details and extremely weak light discrimination, it has lost to the S7 edge. Most places can win a small victory, and the performance is amazing;
The performance of Xiaomi 5s and Meizu PRO 6s was contrary to expectations. The former lost weak light, but it was better than the photography experience and better white balance;
The noise reduction algorithm of PRO 6s performs well and can trigger automatically, but the metering, camera speed and experience, and tolerance are at a disadvantage. The difference between it and Xiaomi 5s is a little like S6 vs. G4 in those years. One has good experience and white balance, and the other has good absolute image quality. It is difficult to distinguish between them, so they can only choose according to their respective purposes.
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