After the iPhone 7 Plus comes out, it is estimated that both fruit fans and Samsung/LG fans will be interested in taking photos of the new iPhone. In addition to increasing the aperture to improve the weak light performance this year, Apple has also given up the face to face confrontation with the Android platform in terms of discrimination and installed a telephoto lens to "save the country". But can it catch up with or even surpass the first echelon of the Android platform? Now let's leave it to the sample sheet to make a final conclusion.
Experience and standards
Parameter comparison
Although Note7 has "gone with the wind", it is Samsung's strongest work in the second half of 2016, so it is still used as a benchmark for comparison.
This article mainly compares the effect of taking photos, and does not introduce the experience of taking photos too much. The basic summary is that Note7 takes a big lead by focusing, and the iPhone 7 Plus has a slightly higher success rate in focusing. In addition to the normal camera automation and film rate, Note5 and LG G5 have the lowest delay, focusing and imaging speed of the weak light viewfinder box among flagship phones, which is not as good as many low-end phones.
The measurement standards of imaging effect mainly include:
White balance and photometry 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;
Discriminative power Roughness can be understood as clarity, and the sharpness, detail and naturalness of the picture must be taken into account at the same time;
Tolerance , that is, the ability to show details in the light and dark at the same time. For mobile phones, this is basically equivalent to whether the HDR effect is natural and harmonious, whether there are ghosts, white balance deviation, and poor discrimination after synthesis;
The remaining assessment contents include noise control, color saturation (the closer to the naked eye, the better, but Samsung and Huawei will be able to raise it recently to please users), lens quality (including edge degradation control, anti glare, fog control, wide-angle and pillow deformation control, etc.), and many other contents.
Although everyone's requirements for photographic experience are almost the same, for different users, the proportion of different imaging projects is completely different: for example, the number of Maoists who like to enlarge photos and scan will definitely put discrimination first, and the proportion is very high; In the circle of friends, the party attaches great importance to photometry, white balance, saturation Tolerance And other projects, but the requirement of discrimination is not high. It would be better for everyone to focus on understanding what they care about.
PS： The focus of the lower samples is at the center, arranged from top to bottom according to the intensity of light. The iPhone 7 Plus samples are all converted by sRGB.
White balance/metering/contrast/tolerance contrast
Daytime Scenario 1
Daytime scenario 2
Daytime scenario 3
Daytime scenario 4
Indoor scene 1
Indoor scene 2
Indoor scene 3
Indoor scene 4
Weak light scene 1
Weak light scene 2
Weak light scene 3
metering: If measured by the standard of realism, Note 5 is the one whose comprehensive level of exposure is closest to that seen by the naked eye; Note7 The default metering is slightly higher than what the naked eye can see. When the scene reaches the extremely low light level, it will trigger the "night vision device" like night view mode, and the image brightness is one to two levels higher than that seen by the naked eye; The iPhone 7 Plus largely corrects the problem of insufficient exposure of the iPhone before, but it still uses the strategy of maintaining ISO and giving up brightness under weak light, resulting in the exposure of weak light scenes being weaker than the naked eye and Android flagship; However, G5 metering is relatively unstable and is very close to the naked eye in most cases, but it is more likely that the scene with large light difference will be significantly darker.
White balance: Although the picture of iPhone 7 Plus looks yellow, it is closer to the real situation, followed by Note7 and Note5, which tend to be yellow and warm under indoor lighting. The G5 tends to be blue-green as a whole, and its white balance stability is not as good as that of the other three machines.
Tolerance/Contrast/Saturation: The debugging of photography is a challenge to pull the whole body together. In addition to the quality of CMOS, tolerance depends largely on the HDR algorithm, which will reduce the contrast to a certain extent, while saturation and metering will also affect the contrast.
In terms of HDR algorithm, the new iPhone is more dominant. In addition, the exposure is relatively dark, and the light detail performance is better when dealing with large light difference scenes such as sunny days; The contrast of Note7 is obviously higher than that of Note5. The metering of most scenes is relatively conservative, and it is easy to lose dark details like the iPhone, but the first impression of the photo will be more pleasing than that of Note5, which is "flattened" by the lens floodlight and HDR contrast; HDR of LG G5 The trigger threshold is high and the HDR algorithm is light, resulting in a large lag in tolerance. The only commendable thing is its excellent color saturation and picture purity even in extremely low light scenes.
Discrimination/noise control/texture contrast
Click the picture to view the large picture
Daytime Scene 1 Enlarged
Daytime scene 1 center left zoom in
Daytime Scene 2 Enlarged
Daytime Scene 3 Enlarged
Daytime Scene 4 Enlarged
Enlarge indoor scene 1
Enlarge indoor scene 2
Indoor scene 3 central magnification
Indoor scene 3 enlarged on the left in the center
Indoor Scene 4 Enlarged
Indoor Scene 5 Enlarged
Enlarge weak light scene 1
Enlarge weak light scene 2
Enlarge weak light scene 3
Enlarge weak light scene 4
Enlarge weak light scene 5
Weak light scene 6 central amplification
Weak light scene 6 center right zoom in
In terms of discrimination, the advantage of LG G5 is almost overwhelming. The proper sharpening and noise reduction algorithm enables it to be compressed to Note5 with the same pixel. The problem of the latter is the low contrast of the image itself and the white noise in the fine spots; Sharpening algorithm Abnormally heavy handed At first glance, Note7 has a good analytical power, and the noise control in detail has been significantly improved compared with Note5. However, the details not collected can not be adjusted by the algorithm, and 12 million pixels and larger wide-angle are bound to be sacrificed;
In the face of weak light, the iPhone and Android platforms have different directions in researching noise reduction and smearing algorithms. They give priority to ensuring low ISO. If not, they will reduce the exposure to a certain extent. The large aperture of this generation f1.8 allows the iPhone 7 Plus to achieve incredible ISO suppression. In the darkest test scenario available, the iPhone 6s will reach ISO 2000. In the scenario where Samsung and LG flagship trigger night view mode and ISO breaks a thousand, the iPhone 7 Plus can also maintain ISO 250-320. The ISO of daytime and lighting scenes is always between 25-100, which is quite ferocious. All these make the iPhone 7 Plus's weak light noise control much better than the previous generation.
In order to ensure the naturalness and detail of the picture, the algorithm of "inaction" as far as possible not only can hardly see the traces of smearing and noise reduction, but even the intensity of sharpening is very light. This kind of effort, though, has led to the iPhone's ability to distinguish between daytime and most scenes is much weaker than that of other competitors. But the Maoist Party also has to admire the iPhone's dedication to faithful restoration.
IPhone 7 Plus telephoto camera comparison
The previous generation of large iPhones exclusively used optical anti shake. This year, after the optical anti shake was lowered to small iPhones, the iPhone 7 Plus exclusively used a telephoto camera with an equivalent focal length of 56mm, which can be exchanged for twice the approximate effect of "optical focusing". This camera uses a slightly smaller sensor (calculated from the actual 6.6mm focal length, the sensor size is about 1/3.53 inch, and the unit pixel size is smaller), with only an aperture of f2.8 and no optical anti shake. These three factors doomed its light and weak light display to be inferior to the main camera. So Apple will not turn on the telephoto lens when the light is weak, but will directly use the main camera to provide the digital zoom function.
Sunlight Scene 1 Center Zoom In
Sunlight Scene 1 Center Left Zoom In
Sunlight Scene 2 Center Zoom In
Light Scene 1 Center Enlarged
Light Scene 2 Center Enlarged
Light Scene 3 Center Enlarged
Light Scene 4 Center Enlarged
Light scene 4 center left zoom in
This telephoto camera can be called until the light weakens to the level of "normally bright indoor light", and the film rate and the main camera are not different. The "double light change" obtained at the expense of vision is quite exaggerated in its analytical power. It is easy to throw away the LG G5 standing at the top, and the better the light, the greater the gap. However, the white balance of this camera is not as stable as that of the main camera. The same scene can often shoot different colors, and the noise will be obvious when the light is slightly worse.
Weak light scene 1
Weak light scene 2
Interestingly, the iPhone 7 Plus cannot call a long camera in low light, but the main camera has a certain probability of using a higher ISO after digital zoom, and the image brightness may be higher than that of the sample without digital zoom. But this is still the main camera, which is still a certain distance from the top flagship of Android in weak light.
In general, the availability of this camera in the daytime is average. It is still very powerful to climb high in the daytime to look into the distance or take PPT of classes/meetings. Its weak weak light performance makes it unable to work in the evening or even most indoor scenes. Well, yes, if the light in the classroom is not bright enough, it may not be able to call
IPhone 7 Plus Dual Phantom
In addition to being used as a telephoto lens, Apple also has its own dual camera virtualization. The competitor here is Huawei P9, which is currently the most targeted dual camera device in Android. The latter is a dual 12 million rear camera with Sony's IMX286 sensor.
Scenario 1
Zoom in top
Center right zoom in
Zoom in at the bottom
Scenario 2
The iPhone 7 Plus will turn on virtualization in "portrait mode" and forcibly switch to a telephoto lens, which will significantly narrow the field of vision. At this time, the main camera is only used to provide the distance information needed for virtualization. Because we use a telephoto lens, we have brought the dual effects of telephoto virtualization and algorithm processing. In addition, the fuselage will save the samples before and after the virtualization process. The actual film will be blurred to different degrees according to the distance of the scene (the head shot, but the shoes are partially blurred). For the body with a clear outline, except for some parts with different colors, the virtualization effect is more natural, but it will be difficult to deal with complex objects such as models.
Scenario 1
Scene 1 zoomed in on the left
Scenario 1 Zoom in right
Scenario 2
Scene 2 Enlarge
In comparison with Huawei P9, it is obvious that the virtualization algorithm of iPhone should be more mature. The virtualization will stick to the edge of the target, and the force processing control will be more natural. However, compared with the effect of virtualization itself, the weak light degradation of the telephoto lens itself is much more obvious. After the light is slightly poor, it is a bit difficult to shoot objects well... You should know that the scenes we shoot people are often indoor or even nightclubs, and the weak weak light of the telephoto lens itself directly affects the practicality of this portrait mode.
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