Is it possible to take pictures with a mobile phone instead of a SLR?

I think as long as the shooting principle of the camera does not change, there is no possibility that the mobile phone will replace the SLR. Even people who don't know the camera, as long as you compare the SLR with the mobile phone, you will know that the SLR camera is so big and the lens is so thick, how can it be the same as the mobile phone? Take the lens as an example. Generally, SLR cameras are equipped with zoom lenses ranging from 18mm to 200mm to meet different shooting needs. Because the longer the focal length of the lens, the farther it can be photographed. When shooting distant views and portraits, telephoto lenses often play a very good role. However, due to the size limitation of the mobile phone, it is impossible to make a zoom lens. Nowadays, the popular dual-camera mobile phone uses a combination of wide-angle and telephoto lenses to make up for this defect. For example, the wide-angle lens is 28mm, and the telephoto lens is 56 mm The difference between the two lenses is twice, which just achieves twice the optical zoom. But the size of the mobile phone is that big, and the lossless zoom of up to 3 to 5 times is already the limit, and it is impossible to shoot far. Professional SLR cameras can use lenses with different focal lengths according to actual needs, not to mention special ultra-telephoto lenses for shooting animals, birds and celestial bodies.

Even for ordinary fixed-focus lenses, the lens size used by SLR is much larger than that of mobile phones. The larger the lens size, the larger the lens aperture and the clearer the shooting effect. Although the lens aperture of smart phone has reached f/ 1.5, the high-end lens aperture of SLR camera is almost f/ 1.4. And the larger the aperture, the higher the price of the biggest lens. The SLR lens with f/0.95 is about RMB 80,000, and you can buy more than a dozen Huawei P20s.

Dear. But the aperture of a mobile phone is different from that of a SLR. As far as the background blur effect is concerned, the most common f/5.6 aperture of SLR cameras is longer than the f/ 1.8 aperture of mobile phones. Moreover, the background blur effect of smart phones is basically made by processor "PS", and the effect is far less natural than that of large aperture SLR cameras.

Finally, the size of CMOS sensor. There is an old saying in photography that "the bottom is the first step to crush people", and this "bottom" refers to CMOS size. Because the CMOS size determines the sensitivity of the camera to light, the larger the size, the clearer the imaging effect. The CMOS of traditional smart phones is mostly 1/2.3 inches, which is currently the largest Huawei P20.

The CMOS of Pro is 11.7 inches, which is close to the "bottom" of1inch. Among professional SLR cameras, the CMOS size of the most common ASP-C format is 368mm? , Quan Huafu SLR is 864mm? . In contrast, the CMOS of smartphone11.7 inch is only 42mm? 1/2.3 inches is only 29mm? .

Therefore, both the lens of smart phones and CMOS are far inferior to SLR cameras, which is determined by the size of mobile phones and limited by physical principles. As long as the mobile phone is still optically imaged, it will never replace the SLR camera.