The new ISP and MIUI 10 are the gap between the old and the new era of Xiaomi photography.
The protagonist of this photo comparison is Xiaomi 8 SE. In order to see how the first launch Snapdragon 710 uses the quasi flagship of IMX 363, its photo level is. Its rivals include Xiaomi 6X, Hongmi Note 5 and the new flagship Xiaomi 8, hoping to help users who are struggling to take photos.
This time, the original will be uploaded to Love to play computer games You are welcome to visit the sample library of . If you browse on the official website of Ainongji, you can click the picture to view the large picture. All mobile phones are in the default automatic mode, and the focus of the sample is in the middle.
Hardware and Analysis
According to the ranking analysis of the photo generation process, the reference of these contestants is interesting when they are put together:
Sensor and aperture (the bigger the better) : Except that Xiaomi 6X is 1.25 μ m, the rest are 1.4 μ m products. Among them, the IMX363 of Xiaomi 8/8 SE is more advanced than the Samsung S5K2L7 on Hongmi; The Xiaomi 6X with the smallest unit size has the largest aperture, Xiaomi 8 SE has no optical anti shake, and its aperture is smaller than Xiaomi 8;
ISP (Image Signal Processor) : Hongmi Note 5 is a Snapdragon 636, but its ISP and DSP are consistent with the Snapdragon 660 on Xiaomi 6X; Xiaomi 8 SE is a higher level. The Spectra 250 ISP of Snapdragon 710 is the same generation product of the Spectra 280 on Snapdragon 845;
Algorithms and systems: As of June 7, both Hongmi Note 5 and Xiaomi 6X are MIUI 9.5.7 stable version systems, while Xiaomi 8/8 SE are MIUI 10.5.30 development version (mass production machine is MIUI 9). Between these two generations of systems, Xiaomi has updated its own photography algorithm. During this period, there were two DxOMark percentage cameras, Xiaomi MIX 2S and Xiaomi 8.
Investigation items and scales
The core of mobile phone photographing is the photographing experience and imaging effect. The main factors that affect the experience are: The smoothness of shooting and the consistency of the film, Whether the viewfinder has problems such as delay/shadow dragging/frame dropping/noise full screen; speed , including focusing speed, shutter response, and imaging speed; Film rate , the probability of destroying the film by shaking hands; Intelligence, Whether the scene with large light difference and weak light can be recognized, and HDR and night view mode can be automatically triggered.
The imaging effects mainly include:
White balance and metering: In many scenes such as sunlight/light/weak light and extremely weak light, whether the white balance (picture color and wind direction) and brightness can be close to the naked eye;
Tolerance: That is, the ability to show the details of light and dark at the same time. For mobile phones, this is basically equivalent to the HDR effect, including the size of processing power, whether the processing is natural and harmonious, whether there is ghost after synthesis, white balance deviation, and the decline of discrimination;
Discrimination: Roughness can be understood as clarity, and the sharpness, detail and naturalness of the picture must be taken into account at the same time;
The remaining assessment contents include noise control, color saturation, lens quality (including edge degradation control, anti glare, fog control, wide-angle and pillow distortion control, etc.) and many other contents.
There are objective standards for good photography, but the high saturation, high contrast and filtering of mobile phone imaging in recent years indicate that the mainstream has begun to develop in a pleasing direction. Even the iPhone began to deviate from the official restoration route, and various Leica and AI filters appeared, which added the color of "aesthetic metaphysics" to camera photography.
However, in the face of the same set of comparison proofs/the same objective fact, people with different evaluation systems, preferences and ideas will inevitably have different, or even opposite, views. For different users, the proportion of different projects is completely different: the Maoist Party, which likes to zoom in and scan, will definitely put discrimination first, and the proportion is very high; If it is mainly used for sunning in the circle of friends, it should pay more attention to tolerance, white balance, saturation and other items; The final effect is just as good as everyone likes it. Just focus on what you care about.
Photography experience, wide angle, HDR and telephoto
The experience of Xiaomi 8 SE, such as the photographing interface, imaging speed and shutter response, is very close to that of Xiaomi 8 , but it has no optical anti shake, the frame is not as stable as Xiaomi 8, and the weak light rate is lower. Xiaomi 6X does not have full pixel dual core focusing, and the weak light spot light source scene is easy to pull the bellows and cannot be focused. The focus of the Red Rice Note 5 is OK, but the speed of multi frame synthesis is slow, and it is easy to shake hands and ghost.
When the left side is aligned, the field of vision of Xiaomi 6X on the right side is smaller
Xiaomi's EXIF does not provide reliable equivalent focal length information, but it can be found in the actual film that not only the aperture and lens module (all of them are OFI light) of Xiaomi 8 SE are close to those of Hongmi Note 5, but even the setting of large wide-angle is the same. Their wide-angle is larger than that of Xiaomi 8, and even larger than that of Xiaomi 6X with a "telephoto" lens.
Enlarge the scene 5 meters away, and enlarge it proportionally
The advantage of large wide-angle is that the field of vision is large, but the same object will be smaller in the photo (that is, the unit scene can be divided into fewer pixels, the effect is as shown in the above figure), and the discrimination will suffer.
Because there are precedents on Xiaomi MIX 2S and Xiaomi 8 that "automatic HDR leads to the decline of weak light performance", the effect of turning on and off automatic HDR for four machines under weak light is specially compared this time:
Comparison between opening and closing HDR of Hongmi Note 5
Hongmi Note 5 opens and closes HDR contrast and zooms in (pay attention to the light source and dark part)
The automatic HDR of Hongmi Note 5 will also affect the weak light performance, but not as obvious as Xiaomi 8 series After triggering HDR, highlight suppression and noise control are better, but some dark details are sacrificed. There are no obvious advantages and disadvantages here. Those who like to distinguish between the two will choose to turn off the automatic HDR, and those who like to see the light source and picture purity will choose to turn on the automatic HDR.
Comparison between opening and closing HDR of Xiaomi 8
Xiaomi 8 turns on and off HDR, zooms in (pay attention to the light source and dark part)
The weak light automatic HDR feature of Xiaomi 8 is expected to be familiar to readers who have seen the comparison of photos taken by the fan. After the automatic HDR is triggered, although the highlight suppression at the light source is good and the noise is smeared more thoroughly, the dark details are lost seriously, which is more than the cost. It is recommended that the automatic HDR be turned off directly for weak light scenes.
Comparison between opening and closing HDR of Xiaomi 6X
Xiaomi 6X turns on and off HDR and zooms in (pay attention to the light source and dark part)
Xiaomi 6X open and close HDR contrast, zoom in
Xiaomi 6X's weak light automatic HDR performance is similar to that of Hongmi Note 5. It is also recommended that users decide whether to keep the automatic HDR open according to their preferences.
Comparison of Xiaomi 8 SE on and off HDR
Xiaomi 8 SE open and close HDR contrast, zoom in (pay attention to the light source and dark part)
Xiaomi 8 SE open and close HDR contrast, amplification
The case of Xiaomi 8 SE is the most special. Under weak light, the automatic HDR trigger is not as sensitive as the other three machines. The above two test scenarios were not triggered. This eliminates the need to worry about the automatic HDR switch.
Among the four machines, only Xiaomi 8 has a telephoto sub camera, which can be magnified and contrasted. Of course, there is no comparability:
2x magnification and contrast
2x magnification and contrast
Among them, Xiaomi 8SE and Hongmi Note 5 are the same sub camera, and the 5 megapixel S5K3E8 is responsible for the depth of field visualization. The Xiaomi 6X is the most special. Its 20 million pixel subphoto is a conventional focus segment. This kind of sub shot is generally used for digital cutting (2000W is cut into 1200W) when zooming, or for weak light imaging (pixel 4 in 1 technology), but the sub shot of Xiaomi 6X is not involved in zoom and weak light imaging, and is still used for depth of field virtualization (very wasteful), the situation is the same as one plus six
Daytime scene
Daytime Scenario 1
Daytime Scene 1 Zoom in above the center
Daytime scene 1 central zoom in
Daytime scenario 2
Daytime scene 2 central zoom in
Daytime scenario 3
Daytime scene 3 central zoom in
Light scene
Light Scene 1
Light Scene 1 Center Enlarged
Light Scene 2
Light Scene 2 Center Enlarged
Light Scene 3
Light Scene 3 Center Enlarged
Weak light/extremely weak light scene
Weak light scene 1
Weak light scene 1 central amplification
Weak light scene 2
Weak light scene 2 central amplification
Weak light scene 3
Weak light scene 3 central amplification
Enlarge the center right side of weak light scene 3
Weak light scene 4
Enlarge the left side of the center of weak light scene 4
Weak light scene 4 central amplification
Weak light scene 5
Weak light scene 5 central amplification
Summary
The result of this comparison is too obvious. Here we directly show the high and low, from low to high:
Hongmi Note 5: In fact, the two sets in front are hard to distinguish. After all, the sensor of Hongmi Note 5 is 1.4 μ m, and Snapdragon 636 and Snapdragon 660 are the same ISP. It was expected that it would be better than Xiaomi 6X, but Xiaomi 6X is also good. The low light multi frame synthesis speed of the red rice note 5 is average, and it is easy to have ghosts when shaking hands, The picture performance is actually OK After all, it is a 1099 starting machine. The whole film style, smear noise reduction and sharpening style are very close to Xiaomi 6X, but the tolerance is better, but weaker than Xiaomi 8 SE;
Xiaomi 6X: It is also the most special one among these sets. It uses a longer focal section, Wide angle is small, but discrimination benefits from it The discrimination of almost all scenes can be better than that of the red rice Note 5. Its sensor unit pixel size is the smallest, after the light becomes worse The saturation decreases significantly and the exposure is insufficient . Its biggest problem is that the extremely weak light scene can not focus on the bellows and can not close the focus, which must be solved by using focus locking or manual mode;
Xiaomi 8 SE: The metering, white balance and saturation are very close to that of Xiaomi 8, except that the primary color of 8SE is red, and that of Xiaomi 8 is yellow, which is quite different from the style of Red Note 5 and Xiaomi 6X. Limited by wide angle, Xiaomi 8 SE and Hongmi lost their daytime discrimination to Xiaomi 8 and 6X. But after the light became weaker, it was Xiaomi 8/8 SE. The brightness, tolerance and details were all crushed. The other two were beaten completely out of temper.
But the details of Xiaomi 8 SE are still far from Xiaomi 8 After all, the wide-angle is large, the aperture is small, and there is no optical anti shake. Here is a detail: the Xiaomi 8 SE will not trigger HDR as easily as the Xiaomi 8 SE under weak light, which is good;
Xiaomi 8: What else can we say about DxOMark's 105 point camera? As one of the top domestic cameras, the discrimination, tolerance and weak light brightness are all very good, mainly the white balance accuracy, camera response speed and other small details need to be improved.
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