In addition to the Xiaomi 5s Plus (IMX258) and the "concept machine" Xiaomi MIX, the flagship optical anti shake+IMX298 in the first half of the year, the largest unit pixel size of Sony's IMX378 (phase focusing version of IMX377) and the highest pixel size of Sonny's IMX318 are used in Xiaomi 5, Xiaomi 5s and Xiaomi Note2 respectively. The hammer M1L is an IMX318 with optical anti shake. Now let's take a look at the internal battle between Sony Sensor and Xiaomi:
Comparison Diagram of Xiaomi Note2/Xiaomi 5/Xiaomi 5s/Hammer M1L Camera Parameters
Photo experience
The camera experiences of Xiaomi and Hammer are quite different, but there is little difference in the experience under the default mode. Their biggest difference is that the flagship series of Xiaomi has automatic HDR and night view functions. The Hammer M1L can only be opened manually, and the HDR processing time can be as long as 3 or 4 seconds, and there will be a problem of shooting jams.
Focus and film rate, from strong to weak: Xiaomi 5s Focusing is clean and has great advantages, even in dark light, it also has a high focusing rate; Xiaomi Note2 and Hammer M1L have similar performance, and the focusing is relatively stable. However, the version of firmware before the deadline of Hammer M1L has false focus in some scenes, and the viewfinder box cannot be seen. You have to manually click the screen to focus to ensure the focusing rate; The main problem of Xiaomi 5 is focusing in dim light. Some dim light scenes with dot light not only pull the bellows, but also are difficult to focus successfully, We have to rely on focusing and locking techniques, which is also a problem not found in earlier firmware (MIUI 8: blame me).
Panoramic mode comparison
Panorama mode photo size of the 4 units:
Hammer M1L: panoramic angle about 270 degrees, 11408 * 2464, 4.87MB
Xiaomi Note2: panoramic angle is about 230 degrees, 6816 * 1728, 4.49MB
Xiaomi 5: panoramic angle of about 220 degrees, 6880 * 1664, 4.00MB
Xiaomi 5s: panoramic angle of about 230 degrees, 13760 * 3520, 13.1MB
The panoramic effect of Xiaomi 5s and Hammer M1L is better. The former is better than the lower resolution and image compression, while the latter is better than the larger field of vision, but the metering is slightly darker; In Xiaomi's home, Xiaomi Note2 may have its high pixel, which caused processing pressure, and the sample showed obvious stitching marks.
Same point amplification
Xiaomi 5s with the lowest pixel can capture the clearest details, and the visual field distortion is smaller. The details of the high pixel hammer M1L and Xiaomi Note2 are not as good as expected.
Lens quality&wide angle&edge degradation
Sample size comparison
Equal magnification, comparison of the size of the same object
wide-angle: The exif information of hammer M1L and millet 5 shows that the equivalent focal length is 28mm, but actually the wide angle of millet 5 is smaller than that of hammer M1L. The focal length information of Xiaomi 5s and Xiaomi Note 2 has some minor problems, and the equivalent focal length cannot be confirmed, but their actual wide-angle/equivalent focal length size is very close, both slightly larger than the hammer M1L, and a section larger than Xiaomi 5.
After the same scene is magnified proportionally, the 16 megapixel Xiaomi 5 is not much smaller than the 23 megapixel hammer M1L and Xiaomi Note 2, but only the 12 megapixel Xiaomi 5s uses a large wide-angle lens, so the object will be much smaller, which directly affects its performance of discrimination, making it suffer from the tangle of insufficient discrimination.
Edge deterioration (the lower right corner of the sample is enlarged)
Glare control comparison
Edge deterioration: Hammer M1L and Xiaomi 5 have added optical anti shake, which makes it more difficult to control the lens edge degradation, which is worse than Xiaomi Note2 without optical anti shake, and is significantly different from Xiaomi 5s with almost no edge degradation.
When the front side is strongly backlighted, the glare control of Xiaomi 5s and Hammer M1L is relatively good, the contrast of the picture will not decrease significantly, and there is no obvious fog phenomenon. The light spot is relatively small (the purple part is caused by the reflection of the strong light in the lens), followed by Xiaomi Note2, and the performance of Xiaomi 5 is worse. They are all within the normal range, and it is easy to avoid them in normal composition.
White balance/metering/tolerance/saturation contrast
PS： This part of the sample is used to compare the white balance, photometry and color saturation, and the discriminant force sample is concentrated in the last part. The focus of the proofs is in the middle, and they are magnified in the center. All samples are arranged from strong to weak light:
Hammer M1L does not have automatic HDR and night view functions, but HDR mode will significantly affect the metering and limit discrimination, and has a low availability. Therefore, the following comparison uses the sample of default mode by default, while for weak light and night view scenes, select the better one of default and night view modes as a representative.
Daytime sample sheet 1
Daytime sample sheet 2
Daytime sample sheet 3
Daytime sample sheet 4
Weak light sample sheet 1
Weak light sample sheet 2
Weak light proof sheet 3
Ultra weak light sample sheet 1
Ultra weak light proof sheet two
Ultra weak light sample sheet 3
Ultra weak light sample sheet 4
Ultra weak light sample sheet 5
metering: Hammer M1L is normal in light and indoor scene metering, but it is darker in strong light and weak light, and the stronger/weaker the scene light, the more obvious the underexposure. The three Xiaomi houses, including the extremely weak light scene, are close to the naked eye. Xiaomi 5 is slightly brighter in the daytime, and Xiaomi 5s is slightly brighter in the extremely weak light.
White balance and saturation: In the daytime scene, the white balance of Xiaomi 5 and Xiaomi 5s is relatively accurate, and the green saturation of the latter is higher. Hammer M1L tends to be red and yellow, Xiaomi Note2 tends to be green, and the green saturation is high. After the light became weaker, millet's 5s white balance was unexpectedly good. Apart from Xiaomi 5, which turns green in weak light, Xiaomi Note2 and Hammer M1L are acceptable. The former tends to be green, while the latter tends to be red.
Tolerance and contrast: On machines with poor HDR algorithm or high trigger threshold, tolerance is basically linked to the size of unit pixel. The Xiaomi 5s (1.55 μ m) with the largest unit pixel has obvious advantages in tolerance. The default mode is like the one with HDR effect, followed by Xiaomi 5 (1.12 μ m) and Xiaomi Note 2 (1.0 μ m). The hammer M1L, which is often underexposed, has the problem of high contrast/low tolerance. The separate sample may not be obvious, but it will be sad when compared with conventional mobile phones.
Discrimination/noise control/texture contrast
PS： Click the picture to view the large picture, The focus of all proofs is in the middle, and they are magnified in the center. All samples are arranged from strong to weak according to ISO and shutter:
Sun Scene 1
Sunlight Scene 1 Center Zoom In
Sunlight Scene 2 Center Right Zoom In
Sunlight Scene 2 Center Zoom In
Sunlight Scene 3 Center Zoom In
Light Scene 1
Light Scene 2
Light Scene 3
Light scene 3 center left zoom in
Light Scene 4
Weak light scene 1
Weak light scene 2
Weak light scene 3
Extremely weak light scene 1
Extremely weak light scene 1 central amplification
Extremely weak light scene 2
Extremely weak light scene 3
Noise control: It is directly determined by the size of unit pixel and the noise reduction algorithm. Xiaomi 5s has an overwhelming advantage in the daytime scene. The next stage is Xiaomi 5, followed by Xiaomi Note2. The hammer M1L of IMX318 is also used to ensure details. Even in the daytime, the noise is more obvious than Xiaomi Note2. After using the night view mode, the millet painted on the big bottom+the millet painted on it for 5s can hardly see the granular noise under the extremely weak light, followed by the hammer M1L, followed by the millet Note2, while millet 5 rarely painted on it to ensure the analytical power, and the noise is moving.
Discrimination: For a mobile phone, the number of pixels is fixed. The larger the wide-angle is, the lower the number of pixels in the same scene will be, thus affecting the discrimination. Reviewing the above contrast of scenery size, it can also be predicted that Xiaomi's 5s discrimination will definitely be hanged. As soon as the sample is magnified, the pain of insufficient discrimination will be felt; Unexpectedly, the ultimate analytical power of Hammer M1L and Xiaomi Note 2 is the same as that of Xiaomi 5 with 1600 pixels The comparison can only be said that there is a winner or loser for each other, and even Xiaomi Note2 is slightly inferior.
After the light became worse, three smearing algorithm tendencies appeared in the four machines. Xiaomi switched to the night scene algorithm that tried to ensure that the details were hardly smeared on Xiaomi 5. Maybe it was the noise problem that made everyone feel bad. On Xiaomi Note2 and Xiaomi 5s, it returned to the previous strong smearing scheme, but the noise reduction algorithm still needs to be improved. Many details have been smeared out. The hammer M1L is a compromise version of them. Better noise reduction algorithm makes it have obvious advantages in indoor lighting (half good light). However, in low light scenes, the hammer M1L with optical anti shake cannot be separated from Xiaomi Note 2 in terms of discrimination, and is inferior to Xiaomi 5 with full noise.
summary
The imaging of several machines is very different and can be directly divided into two gradients:
Xiaomi 5 and Xiaomi 5s perform better, but they are just like the opposite. The former is still a good camera, except for weak light focusing and noise; The latter has first-rate photo taking experience, tolerance and white balance are definitely the best machines in the history of Xiaomi, none of which is one of them, but the discrimination is hard all the way, and the Maoist party will be more distressed;
The IMX318 carried by Xiaomi Note2 and Hammer M1L is a typical "dragon in the day, worm in the night". In addition, Xiaomi Hammer is equipped with wide-angle lens, which has advantages in the range of view, but its discrimination cannot be separated from a 16 million pixel machine. Although the light and indoor scene of Hammer M1L are supported by optical anti shake and good daubing algorithm, and have excellent discrimination, it has many small problems, such as too high contrast, insufficient tolerance, inaccurate metering, and serious underexposure of dark light, which directly affect the first impression of the proof. If we insist on choosing between them, the author will vote for Xiaomi Note2, who is in the right place.
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