What does it mean when wedding photography enters the 4k era?

This refers to the resolution of the camera, which means that in the video files it generates, the maximum pixels on one side (usually horizontal) can reach more than 4000 pixels. For example, Sony's pmw-f5 and the F55 used in shooting A Bite of China 2 have already reached this level. But one thing to be clear about is that even many current mobile phones are advertising 4k, which is inaccurate. In the true sense, 4k refers to the image quality of the original picture without amplification and with the highest pixel density. To understand simply, the pixels of a single photo output by the Nikon d700 camera are 4256*2832. Obviously, in this original image quality, the maximum pixel value on one side reaches 400, which can be called 4k image quality, but This term is for video. In other words, 4k images are composed of 25 static frames per second. Only when the original image quality of each frame reaches 400 can it be called 4k.