Digital cameras have about 7 million pixels when taking pictures, and only 800,000 pixels when taking pictures. Why is there such a difference? Is it standard or something else?

Let me explain first: the higher the pixel, the higher the resolution and the larger the recorded file;

1, the video file is "dynamic", but this dynamic file is still composed of a single static picture, for example, 25 frames per second, where the frame can be understood as a single picture, just like playing a film; Because there are 25 or more still pictures every second to form a dynamic video file, the video file recorded by the camera is relatively large. If you want to record with a 7-megapixel picture file, how big will the video file of 1 sec be (7-megapixel x 25 file size)? What about one minute and one hour! ! This number is amazing; And when playing, the performance requirements for computers or other equipment will be very high! !

2. Because the camera records dynamic pictures, it doesn't need to have high resolution like static pictures! !

According to the model or grade, the pixels for taking pictures and taking pictures have different data: some cameras have only 300,000, and some cameras have 654.38+0.3 million!