Urgent, who knows how Nikon D3 100 appeared on the screen during photography?

On the right side of the big screen, there is a dial with a red dot in the middle. You can hear the creaking sound of the reflector when you dial it. This is the real-time view. Not recommended, it costs electricity and takes a long time to take pictures. Relocate the reflector before taking pictures, with a delay of about 1 to 2 seconds. Actually, focusing is quite simple. Put the subject you want to shoot at any focus on the lens, press the shutter directly, don't release it, and don't press it to the end. Press it to the end and shoot. When you hear the rotation of the motor, you will concentrate. When the sound ends, you will be focused and then press the shutter to shoot.