Please predict when SLR will be replaced by mirrorless camera.

Mirrorless cameras can't replace SLR cameras. It may occupy most of the SLR market in the future, but in the field of outdoor photography and sports photography's flagship SLR, mirrorless cameras is irreplaceable. Because electronic viewfinder technology can't replace optical viewfinder even if it goes further, even two or three steps.

The optical framing of SLR cameras and the electronic framing of micro-cameras are all designed with the goal of "what you see is what you get". The differences are as follows: A. The optical framing of SLR camera is closer to what you see is what you get, more suitable for shooting sudden subjects, and more mature and reliable for shooting moving subjects (especially when there are irregular moving objects). ; B. The electronic framing of the micro-camera is closer to what you see is what you get when you take pictures, which can show the changes of brightness and color, and provide auxiliary functions such as local amplification and peak value.