The iPhone 6s finally went on sale, and the long-awaited pixel upgrade of the front and rear cameras came as scheduled. This time, we found the previous iPhone 6/6 Plus and the current best photo of Android Note5 for comparison. Now let's see the results.
Note: This is an excerpt from the detailed evaluation of the iPhone 6s, so the iPhone 6s Plus is not compared. In contrast to Note5, the author's oversight is that the expectation of the iPhone 6s is too high
Photo experience
They have popularized the advanced automatic mode, which can automatically judge whether to open HDR and night view mode according to the environment. You can just click the shutter to use it.
Focusing speed: iPhone 6s is the fastest, followed by iPhone 6/6 Plus, and finally Note5, but the gap is very small, which is difficult to detect without comparison;
Focusing success rate/film formation rate: Note5 has the highest success rate; In iPhone, the 6Plus with optical anti shake performs better; Unexpectedly, the chance of iPhone 6s handshaking paste is greater than that of iPhone 6. Fortunately, the gap is not too big. Maybe the new camera has not been debugged yet? (For apples, fruit black has its own floor washing mode).
Imaging speed: Note5 is still the fastest, followed by 6s, and 6 and 6 Plus package tails. If the environment triggers the automatic HDR mode, the speed gap will be more obvious.
White Balance and Photometry in Daylight
White balance and metering of light scene 1
White balance and metering of light scene 2
White balance and light metering of weak light scene
Metering: the metering of the three iPhones is relatively close, except It will be darker under weak light, and other environments are very dark Close to the naked eye; In the case of Note5, the brightness of the picture will be higher than that seen by the naked eye under weak light;
White balance: The strongest mobile phones on the earth are already difficult to open the gap in daytime; Under weak light and light, iPhone tends to be slightly yellow and warm, while Note5 is slightly cold. But their ranges are not large, and their performances are very stable.
Discriminative power
Wide angle vs. picture size
The wide angle of Note5 is larger than the other three iPhones Exhibition board ）。 The pictures are magnified to 200%. For Note5 and iPhone 6s, which have pixel advantages, the flower beds in their pictures are a bit larger than those of the previous generation iPhone, and they will have certain advantages in discrimination (the same scenery has more pixels).
Browse Tips: You can click the magnifying glass in the upper right corner of the sample to view the large picture, or use ctrl+mouse wheel to enlarge the page to the appropriate size (about 170%), and ctrl+0 can restore the original scale.
Daytime Vision
Scene 1, the middle of the picture is enlarged (the iron pole on the back of the central signboard)
Scene 1: Enlarge the upper right corner in the middle of the picture (the right longitudinal railing)
Scene 2: Enlarge in the middle of the picture (font in the middle)
Scene 3, super distant view, zoomed in at the center of the picture
Outdoor in the daytime, the discriminant power of the four mobile phones is basically proportional to the number of pixels, but the sharpening algorithm of Note5 is more obvious (the white edge caused by sharpening has already appeared around the iron pole on the right side of Scene 3). The discriminant power/sharpness is a distance ahead of the iPhone for 6s, while the previous generation of iPhone is badly abused.
Indoor lighting
This is the most commonly used photo scene (office, indoor) for many people, and this is also the biggest gap in mobile imaging.
Scene 4, the middle of the picture is enlarged (the gold plate on the back looks at the noise, and the potted plant on the right looks at the details)
Scene 5: Enlarge the picture in the middle
Scene 6: Enlarge the picture in the middle
Scene 7: Enlarge the picture in the middle
Scene 8: Enlarge the picture in the middle
Under normal light, Note5 and iPhone 6 Plus have optical anti shake, and iPhone 6s have new sensors to improve sub-pixel partition performance (which can effectively improve dark light performance). They can run under a very low ISO and are close to the highest picture quality of full blood. Therefore, the difference in discrimination is as big as that in white sky
Note5 continued to hang the whole court, and won the game in terms of picture brightness, dark details, and noise control. The gap is quite obvious. The new iPhone 6s, compared with the previous generation, have made some progress, and can even defeat the 6 Plus with optical anti shake, which is gratifying, but this improvement is far from enough for the new Android flagship.
Another interesting point is that under the light, the white balance of Note5 is warmer and the iPhone is colder. Although they are biased, the white balance of Note 5 is relatively close to what the naked eye can see.
Weak light
Scene 9: Enlarge the picture in the middle
Scene 10: Enlarge the picture in the middle
Scene 10, the right side of the middle of the picture is enlarged (pay attention to the fire box)
Scene 11, extremely weak light picture is magnified in the middle (font on brake disc)
In weak light and extremely weak light, the gap between Note5 and the other three iPhones is still obvious, and the noise smearing algorithm of Note5 is quite adverse (the fire box in Scene 10). The iPhone 6 lost completely. The iPhone 6s showed more details, but still not as good as the 6 Plus with optical anti shake.
In addition, the new sensor of iPhone 6s will produce regular "big fruit" noise (the fire cabinet in Scene 10) under weak light, which has a relatively obvious impact on the impression of sample magnification.
front camera
Dim light
In the dark indoor light, although the front pixel of the iPhone 6s has soared four times, the light is not strong enough. The front camera unit pixel of the iPhone 6s is too small to give full play to its strength, and even slightly inferior to the iPhone 6/6 Plus in details. In the worse light scene, it is estimated that the gap between the two generations of iPhones will be widened.
Normal light
Normal light, enlarged face
Note 5 (the beauty function is turned off) is added here for comparison, but it may be because the younger sister is far away from Note 5 when she holds it. The wide angle of Note 5 is very exaggerated, but the face gets fewer pixels, and the details are not as good as the iPhone 6s and iPhone 6 Plus. In addition, the metering of Note 5 is obviously dark.
It is not known which side of the white balance will be more popular with younger women. But it is certain that the imaging of the iPhone 6s will be better than that of the iPhone 6 Plus when the light conditions become better.
Summarizing the performance of the front camera can only be said to be a failure. The number of pixels increased by 4 times, but the size of unit pixel decreased, resulting in a significant decline in image quality when the light was slightly poor, sometimes not as good as 1.2 million pixels of the old iPhone. Another problem is that the place where Sister Paper takes a selfie is usually dark. Despite the bonus of belief, Sister Paper may find that the front camera of the iPhone 6s performs a little worse than the old iPhone.
Of course, many people may say that Sister Paper doesn't want to be too clear, but this attitude is not correct. If you take a selfie in a nightclub, the result is noisy, and Meitu Xiuxiu can't help you; If you had taken the picture clearly, although your self-confidence would be a little hit at the beginning, at least there are still beautiful pictures that can help you beautify
IPhone 6s imaging analysis
The new sensor of the iPhone 6s is maintained at 1/3 inch. If the pixel density is increased, the size of the unit pixel will inevitably decrease, which will have a negative impact on weak light imaging and image tolerance (the amount of light and dark details that the image can accommodate at the same time). Apple's solution is to add a partition between sensors to reduce the crosstalk between different color sub pixels, so as to improve the signal-to-noise ratio of its sensitivity , to fill in the disadvantages brought by the smaller pixel size (Samsung's ISOCELL uses a similar technology).
In the actual sample, this new sensor can effectively improve the discrimination from sunlight to weak light, but there is a drawback, New sensor In low light White noise will affect the appearance of details to a certain extent.
Its noise characteristics even make people suspect that this may be an RGBW sensor (additional white sub pixels are added to improve weak light performance, but there will be characteristic white noise under weak light). However, its specific structure has to go hand in hand after Can be confirmed only after further disassembly and analysis.
The 8 megapixel camera used by the iPhone can still compete with Android, giving us the stereotype that "any camera used by Apple will be better". In addition, the firm religious belief of Apple fans makes us have high expectations for the new camera of the iPhone 6s.
However, we also ignored an important point. Apple's 1/3 inch CMOS used only 8 million pixels (13 million pixels for IMX135/214 of the same size), which is actually a compromise version of UltraPixel. The unit pixel is much larger than the mainstream Android.
In the field of photography, "the bottom is bigger than the bottom" refers to the unit pixel size to a large extent. Large pixels can maintain fairly high image quality in sunlight, weak light and even a certain degree of ultra weak light, while small pixel sensors have long been full of noise on the screen. But after so many years, even Apple has finally embarked on the Android like pixel stacking route (although it seems that this is the only way).
Conclusion: The performance of the new iPhone 6s in terms of photo experience, photometry, white balance, color saturation and contrast is almost the same as that of the previous generation, and its improvement is mainly in discrimination. In more commonly used daylight and light scenes, the details are significantly improved, but the new sensor Under weak light White noise will have a negative impact on details. However, the iPhone 6s also failed to defeat this generation of Android flagship, which has made rapid progress. It was left behind a long way, and had to wait for the iPhone 6s Plus to redeem it. Here is a moment of silence for the fans...
