In terms of secondary camera parameters, the only one that can compete with Note8 is the iPhone X, which was launched in early November. The sub camera on Note8, which combines "optical anti shake+large aperture (the largest sub camera)+excellent algorithm", is very interesting to many readers because of its actual shooting discrimination, white balance, scope of application and virtual effect.
The comparison in this article includes the comparison between Note8 (N950U) and S8+(G9550), iPhone 7 Plus, one plus five sub camera light change, sub camera digital zoom, and sub camera virtualization. The contrast of the main part can be stamped A Comparison of Note8/S8+/iPhone/One Plus Five Main Photographs see.
If at Love to play computer games Official website browsing, stamping The original can be downloaded for self comparison (iPhone sample has turned to sRGB color gamut). The lower part is the spliced sample, and the focus of the sample is in the center. On the official website of Iookie PC version, you can jump through the directory on the right, and click the picture to view the large picture.
Secondary camera 2x "optical zoom"
Comparison of the size of the secondary photos
The sub shot of one plus five is an IMX350 with 20 million pixels, and the physical one is 1.7 times the focal length. With the digital zoom, the effect of "twice the focal length" is achieved. The sample is a bit larger than the opponent with 12 million pixels.
Daytime Scenario 1
Daytime Scene 1 Zoom in above the center
Daytime scene 1 central zoom in
Daytime scenario 2
Daytime Scene 1 Zoom in above the center
Daytime scene 2 central zoom in
Daytime scenario 3
Daytime scene 3 central zoom in
Daytime scenario 4
Daytime scene 4 central zoom in
Daytime scene 5 central zoom in
Daytime Scene 5 Zoom in above the center
Light Scene 1
Light Scene 1 Center Enlarged
Light Scene 2
Light scene 2 center right zoom in
Light Scene 2 Center Enlarged
Light Scene 3
Light Scene 3 Center Enlarged
Light Scene 4
Light Scene 4 Center Enlarged
Light Scene 5
Light Scene 5 Center Enlarged
Secondary camera 2x "digital zoom"
In the weak light scene, Note8 cannot trigger the secondary camera. At this time, the so-called 2x zoom is the result of interpolation after digital amplification of the main photographic sample (12 million pixels after interpolation). This part mainly compares the difference between the direct amplification of the main camera and the difference between the sub camera:
Weak light scene 1 central amplification
Weak light scene 2 central amplification
Weak light scene 3 central amplification
Weak light scene 4 central amplification
Extremely weak light scene 1 central amplification
Extremely weak light scene 2 central amplification
Paraphotomization
In portrait mode, iPhone can forcibly turn on subphoto, while in the virtualization mode of Note8, the algorithm will decide whether to turn on subphoto according to the light intensity. However, after the two machines started the portrait virtualization mode, the shutter speed increased significantly, the noise reduction became weaker, and the noise control became worse, which doomed the full screen noise in portrait/virtualization.
Day weakening effect contrast 1
Day weakening effect contrast 2
Daytime light is dim, and the effect of virtualization is contrasted 3
The daytime light is dim, the contrast of the virtualization effect is 3, and the edge of the object is enlarged
Light scene virtualization effect contrast 4
Sub camera "optical zoom" : Note8's 52mm equivalent focal length is shorter than Apple's 57mm equivalent focal length, and its wide angle is larger, but its more powerful application and noise reduction make it less discriminative than iPhone 7 Plus. After the light becomes worse, the optical anti shake sub camera of Note8 is quite overbearing. First, the scene can be triggered, even the dim indoor light can be triggered (corresponding to the ISO of 200-250 for Note8/S8 main camera, and the ISO of 800-1000 for domestic Android); Secondly, its noise reduction is much better than that of the iPhone 7 Plus/8 Plus sub camera. Even though there will be many fine noise points when the light is weak, it is much better than that of the iPhone's big fruit noise points, and its discrimination is still much better than that of the main camera's direct amplification;
Sub camera "digital zoom" : In weak light and extremely weak light, Note8 can only use the main camera for digital zoom and "interpolation" to 12 million pixels for output. There is not much difference between the effect and the manual magnification of the main camera. In some scenes, there will even be proofs with twice the digital zoom. Due to faster shutter or higher ISO, the performance will be slightly worse than that of the main camera. The main reason for this problem is that the manufacturer has similar settings on Apple's side in order to ensure the film rate of the "telephoto state", but when the iPhone is zoomed twice in the main camera simulation, it will be more biased towards the discrimination force (resulting in more obvious noise) on the balance of noise and discrimination force.
Paraphotomization : However, after the virtualization/portrait mode is turned on for Note8 and iPhone, the shutter speed increases significantly, the noise reduction becomes weaker, and the noise control becomes worse. It is doomed that the screen will be full of noise when the virtualization/portrait mode is turned on, narrowing the gap between the Note8 sub camera and the iPhone sub camera, and the effect will not be as amazing as when the camera is zoomed twice. But Apple is obviously better at object edge recognition algorithm and virtualization level. Faced with complex objects such as wheel spokes/branches and leaves, Note8 cannot recognize these small objects, so the virtualization effect is better. In addition, Note8 can customize the degree of virtualization, and adjust it to a slightly weaker degree of virtualization, which will look more natural.
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