This article to talk about the Huawei V9 camera function, dual-camera, let Huawei suddenly countless, but some people think that such a black-and-white color dual-lens is simply not useful, but it is a girl, in fact, that more is no use, we Or look at the photo. Here, I hope that my friend can click on the “+Focus†in the upper right corner. Friends who like articles should also like, collect, or comment. Even if a friend has a question, I’ll try to reply. I will bring you more articles on traveling outdoors, photography sports and more. Here it is stated that there may be some aspects in the articles subject to horizontal restrictions, and you are welcome to comment on them. At the same time, I refused to do the manual out of the party and refused to copy the party. When Huawei first appeared in black and white and colored twin shots, the market was actually questioned. It was considered that the double shot ratio of Apple’s different focal lengths was completely tasteless. Some people thought that I didn’t need black and white photos or black and white. This double lens has no effect. But is this the case? Let's talk with photos, just go out and play this group of pictures taken on a cloudy day. It's not much, but it still reflects the quality of the picture. Rainy day performance Macro performance Black and white performance Indoor performance Flash performance When the v9 camera is metering, the flash will light up, which makes the photometry with the flash very accurate, not a dead white near. The performance of the food model After watching the film, we say that the principle, this black and white double lens in the end there is no use? - No low-pass filters and filters! ! Without a filter this is extremely useful in low-light environments, I will say below. First of all, there is no problem with low-pass filters? Speaking of this word, I think that the basics of photography will immediately understand the excellence of this phone. Because of the diffraction phenomenon of light, when the photosensitive element is divided into too many pixels while being neatly arranged with a filter, a moiré will appear in the photograph taken so that the picture cannot be seen at all. At this time, people invented a low-pass filter for digital cameras. When we listen to names, we can guess what it means to reduce the rate of light entering, but to eliminate moire. This layer of filters also does two things. One is to reduce the light that passes through, resulting in more noise in low-light environments, and the other is greatly impairing the resolution and sharpness of the picture! ! Therefore, digital photography must be sharpened late, and the modern high-end SLR, in order to solve this problem, came up with many ideas, such as the color filter to replace the chaotic arrangement of moiré by algorithm, which makes it a filter The mirror has greatly increased the cost of the camera, so we see that the most high-end SLR will introduce a low-pass version, and no low-pass version is more expensive than the filter version of hundreds or even thousands! ! ! ! ! ! ! ! Huawei through a color black and white dual lens, all of a sudden solved the problem of ultra-wound digital photography! ! Because the black and white lens does not need a color filter, there is no moire, naturally not even need low pass! The details of the screen captured by black and white lenses greatly enhance the resolution and sharpness of the picture! ! This is also the biggest feeling that Huawei's V9 camera gave me. Continuing with the picture and the truth, (the following pictures of the city, there is absolutely no post-peak sharpening) So all the pictures taken with a mobile phone know that the biggest drawback of mobile phone pictures is that they can't be enlarged, the phone looks good, and the size of the original picture on the computer is the paste. Hey color blocks! ! There is no sharpness and reconciliation! We use the same grade, personally still like a plus 3T photo to see, is it right? It is clear. Let's take a look at the 100% real size! Look at this leaf is not a color block? Looking at this grass is a bunch of messy pixels, no texture and three-dimensional sense at all! One plus 3T Reed 100% Original Water Wave Figure and 100% Original Magnification Let's take a look at the Huawei V9's mobile phone. The small picture has already been decided to be very clear. Let us zoom in to the size of the original image. Let's look at each leaf, every drop of water, it is clear and sharp, and even three-dimensional. In the comparison, just a plus is completely an impressionist painting, and Huawei is Rembrandt. ! Let's take a look at the contrast between this tiny silk grass and the animal's hair. It is as sharp as a knife, as if it can touch the texture of the picture! Can it be counted! (No late period, no sharpening) We are shooting in black and white, and the sharpness and sharpness are even more alarming. The spike SLR may be exaggerated. I think microseconds can have spikes! Here also to say that this sharpness comes from resolving power and clarity, and it is by no means the same as in the later period. It is a case where you can see more detail in contrast. This can be seen in foggy weather, when it is a foggy environment, because of itself The sharpness of the scenic spot is different before and after, so it will bring natural front sharpness behind and natural blur. If it is late sharpening, the scenery in the fog will also sharpen up and appear unreal. The 100% screenshot in the fog clearly shows that the near is still sharp and the distance is very natural and soft. Of course, the last thing to say here is that one plus 3T pixel is slightly higher than the color lens of V9, so it's all 100% of the original size is slightly unfair to one plus, and one plus 3T camera level is overall OK, if you may wish Zoom in to the computer. In addition to the low-pass double lens, to solve the sharpness of the picture, there is no use? What is worse than cell phone SLR? Night scenes, indoor poor lighting environment in poor picture quality. The pair of lenses also completely solved this problem! Let's take a look at a few photos of Huawei V9. Let's talk about the principle. Why is the night view phone bad? In fact, it is very simple, weak light! The light entering the photosensitive element is too small and can only be digitally amplified, resulting in distortion of the optical information, resulting in noise and rendering the picture without sharpness and resolution. What is good for SLR? Because the SLR sensor is large and the lens has a large amount of light, the number of photons irradiated to each pixel is large, and natural night scenes and interiors are just fine. Knowing this, you may easily understand the advantages of dual-lens, but you may ask, two lens two photosensitive elements, should not be twice the light? How is it 4 times? Have you written anything wrong? Do not! I'm still modest. Actual V9 brings more than 4 times light! ! how to say? Just now I also mentioned that, first of all, there is no low-pass filter for black and white lenses, natural light itself can come in a lot more, and then there is a factor that there is a color filter in the color lens! Why do you need this filter? In fact, whether it is a camera or cell phone sensor is color blind! ! ! Yes, you did not misunderstand, whether CCD or COMS can not perceive the color can only feel the intensity of light, how to take color photos? People are very clever. They have found inspiration from the human eye. Did you know that the stimulation of the fundus cells can't feel the color! However, cones have a large number of ternary color pigments, filter out other colors of light, and then record the intensity of the light of each point of the three primary colors, in the brain synthesis of color images. This principle is like a point-painting painting, in which colors are mixed together with primary colors. The camera is also the same, in front of tens of millions of three primary color filter lens, the information of each pixel is divided into three intensities of color light intensity information to record, that is, we say RGB, composite color unified picture. Is there any flaw in this? The color filter filters out 2/3 of other colors of light, resulting in only 1/3 of the light actually present on the photosensitive element! ! ! Great loss of light information, strong light outdoor does not matter, the night has been less light, this way, less light, it can only be digital amplified light signal (ISO increase), resulting in a lot of noise, damage to quality. This point also exists in the eyes of human beings. Has it been found that you can hardly see color in dark places at night, and the world is basically black and white? It's the result of how much light is not captured by the cones! But what about people? Through evolution, we have found the best way to solve this problem - rod cells! In addition to being able to sense the color of cones, there is also a rod cell that can not feel color, but can feel the light so keenly. This is also a very low light, people can see the black and white outline of things. The reason that not all can't be seen is that although the cones that feel the color do not work, the rod cells work very actively. Here, you may have realized that the black and white lens is simply the cell phone rod! ! ! The black-and-white lens does not have a color filter, which greatly increases the intensity of incoming light and gives a good complement to the color lens in a low-light environment. The two work together perfectly. Just like the human eye, this bionic design cannot be realized. Clever! ! Having said so many principles, we look at the comparison chart, or compare 1 to 3T and Huawei. Under Xuanwu Lake in the nighttime, we can see that there are fewer noises in Huawei's mobile phones, and highlight details are more prominent. However, we also see that the color brightness is lower than that of a one-plus-one mobile phone, mainly relying on black and white lenses to provide solid imaging. Picture 1 plus shot and 100% screenshot Huawei's picture below and 100% screenshots The other one plus night picture Huawei night view After all, there are no tripods, a little shake, there is a halo (maybe the lens did not wipe clean) Here is also the ultimate weapon of Huawei V9 - Super Night Mode. At first I thought this model was just using a small aperture, low sensitivity to achieve slower, to reduce noise. SLRs or manually operated cameras/cell phones can do this. But when I used it, I found myself naive! To a certain extent, the super night view of Huawei V9 resembles the principle of a very high-level multi-stack in the later period of the photo! It is important to have a late stage of the stack. It is not only the synthesis of multiple photos, but also the use of mask technology to prevent overexposure in some places, and to achieve the most extreme quality results through multiple layers of optical operations. Super night looks like taking a video. In fact, it captures light a little bit. When a place is bright enough, it stops capturing and waits for the light in the dark place. This solves the big problem of the night view, which is overexposed and owed. Exposure exists at the same time. Therefore, when you take a picture of the night scene in the city, you know that shooting the night scene is not a night shoot, but the sun just fell! ! ! This lights up, and the environment still has details. The real photographer will not shoot at 8 o'clock in the evening, because the lights are hard and the screen is not worth looking at. Let's look at the Confucius Temple where I shot with a SLR + tripod. I used a small aperture to slow down the door and shoot at 8 o'clock in the evening. It looks very good at first glance, but if you look at the leading part on the right side, you will find that the light part has been completely overexposed without details. The dark part of the river is completely black and there is no detail. Let's take a look at my shot with Huawei's Super Night View (with no tripod, shot on the railing, so it's slightly swaying). Look at everything from the brightest to the darkest. Every detail is clear and the picture is pure. Little noise! The following picture SLR photographs, high light exposure, dark parts of the dark Huawei mobile phone shooting, original photos, over-natural, rich optical information Two Huawei 100% Screenshots In summary, the black-and-white color dual lens is really useful, not just to discuss a dual lens gimmick.
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August 27, 2022