I noticed that vivo mentioned a "SuperRAW" when promoting the image function of X70 Pro+. The most important difference between this gadget and traditional RAW is that it is also a product of "multi-frame synthesis". Yes, using up to 10 RAW files to "stack" into a 14bit SuperRAW file (*.dng), it is said to have better details and dynamic range performance than ordinary RAW files.
So, taking advantage of the opportunity for our company to engage in activities near the Shanghai People’s Park on Saturday, I turned on the "professional" mode of the vivo X70 Pro+ and took some samples in SuperRAW format. At the same time, the body will also generate a regular *.jpg file at the same time, which can be compared with the RAW file.
First of all, we need to explain that the speed of the synthesis of SuperRAW by vivo X70 Pro+ with the help of the V1 chip is very fast, usually each photo can be taken and stored within 1 second— —I don’t feel any delay in shooting. The size of each *.dng file is 23-25mb, which is about 8-10 times the size of a straight *.jpg file, and the capacity is still acceptable. Of course, these files will be slower during playback and transmission, and the display colors may be distorted before being decoded.
Although the latest version of SnapSeed app already has RAW decoding function, I still think it is better for users to finely process such RAW files on the computer. The samples shown in this article are all decoded-edited-save as *.jpg using the latest version of the PS Adobe CameraRAW plug-in. In order to fully demonstrate the advantages of more information, the picture will undergo various processing such as geometric correction, optical correction, and color/exposure adjustment during decoding.
Let’s look at a few sets of SuperRAW and straight-out jpg image quality comparison:
Please note,In the of all comparison pictures, the left side is the mobile phone straight out jpg, and the right side is SuperRAW to jpg .
The actual of all comparison images is 150-250% magnification of the original image instead of the original size .
First of all, outdoor architecture (ultra wide angle). Of course, because SuperRAW files can adjust the exposure and color temperature of the picture more freely, we can easily make the right picture appear brighter and avoid the problems of "excessive contrast" and "underexposure" straight out of jpg . At the same time, we noticed that after 200% magnification, the vivo X70 Pro+ straight out of the JPG has a slight edge of the building due to "sharpening". Although such a picture will look sharper and clearer when viewed on a mobile phone, I pay more attention to avoid this problem in the later stage. In addition, please pay attention to the details of the white clouds on the left side of the two pictures;
When we shift the contrast area to the bottom of the screen, the high latitude brought by SuperRAW advantage Undoubtedly: Pay attention to the tree in the lower part of the picture-straight out JPG is almost dark black, while SuperRAW can easily restore its dark green color and details of branches and leaves. In fact, there are obvious differences in the shadow details of the background building above the tree;
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Indoor scene,First of all, the center part of the screen is also returned. I personally like to adjust the color temperature of this photo to be more like warm colors to preserve the ambient light atmosphere of the shooting scene. At the same time, the SuperRAW image can retain more highlight details, such as the text on the white label of the wine bottle;
The more obvious difference than the bottle label is on the upper left of the screen Wooden ceiling texture: There is actually no obvious difference in the exposure of the two photos, but the SuperRAW on the right obviously better preserves the wood texture details, while the straight-out JPG appears more "light" in this respect-these details seem to be Wiped out? In fact, because the SuperRAW of the vivo X70 Pro+ is the information superimposition of ten materials, the amount of information saved in a single RAW image is huge! This difference in information does not need to be found by raising the dark part or suppressing the highlights...
The third comparison picture is the 8MP 5X periscope using vivo X70 Pro+ Shooting with a telephoto lens, this is probably the only part of the entire imaging system that is not very "eye-catching", but the actual effect is actually not bad.
As you can see, because the bright sky is used as the background, the color of the building in JPG looks a bit "boring", the overall tone is black and white, and SuperRAW can restore Bright blue. In terms of details, JPG is also different from SuperRAW. For example, the details of the stripes on the lotus petals on the roof of the Bund Center Building (the lotus-shaped building in the foreground) are different.
If you compare the text in the building and the advertisement in the two photos,You will also find that " sharpening trimming" straight out of JPG is more conspicuous, and SuperRAW performs much better in this respect. Remind again, these partial comparison pictures of are not 100% of the original picture size, but the result after I enlarged it to 150-250%!
Of course, I use the RAW format daily, and I usually don’t change the color and white balance of the picture too much, but pay more attention to the adjustment of exposure. For example, in the comparison picture below, the rightmost side of the picture is straight out JPG, the middle is SuperRAW converted according to my intentions (not much different from straight out), and on the right side is I forcibly increase the exposure level and greatly brighten the dark parts. The result after the details.
Well, the good news is that even with such a powerful increase in exposure brightness, the SuperRAW of the vivo X70 Pro+ still maintains a very good picture purity. Even without additional noise reduction, I can rediscover rich details from the dark without affecting the purity of the picture. This kind of experience is not uncommon for the current mainstream DSLR or micro-single, but it is a great improvement for mobile phones! After all, it is difficult to achieve such an amazing exposure latitude even in mobile phone RAW in the past...
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me an extra place I got some JPG proofs that I transferred from the SuperRAW of the vivo X70 Pro+,Everyone is welcome to experience the amazing picture quality of this (probably) the most powerful camera phone at the moment. In addition, the last few pictures (food and portrait) were taken with the "Portrait" mode of the vivo X70 Pro+ with a 2X/5X lens. Well, although I think that after the 5X lens + the beauty function is turned on, the treatment of the model's skin seems a bit too "perfect" (actually still retains enough hair details), but at least this does not blindly pursue the "whitening" skin tone treatment Should be able to get everyone's approval?
Finally, I have to admit that I have never advocated using RAW in the past. Because in my opinion, this format that requires more storage space, longer computing time, and more post-processing steps is reserved for "traditional cameras" + "serious creation"-and mobile phones only need to be fast and straightforward. It’s OK if the effect is good enough and social sharing is convenient enough.
But considering that the imaging system of the vivo X70 Pro+ is so professional and powerful, and I will probably use it to replace the traditional camera for real photography creation, so now I need to re-examine my views on mobile phone RAW— —At least, I will start using SuperRAW more on vivo X70 Pro+.
Due to the limitation of the picture display accuracy of the article publishing system, most readers may not be able to see the difference in picture quality between JPG and SuperRAW at a glance. Therefore, I still follow the old rules to package some of the original SuperRAW files used in this article, the straight JPG files, my own transcoded files, and the comparison chart into a network disk. You can download them according to your needs. I suggest that you can try to decode these *.dng by yourself and discover where the SuperRAW performance limit of vivo X70 Pro+ is.
link: https://pan.baidu.com/s/1qVnHn98Y0KsrjXu6cRFkiQ
extraction code: bjjr
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