When is Nikon SLR camera mode used?

Program P file, shutter aperture automatic, other manual, suitable for personalized follow-up shooting. Shutter priority is S file, aperture is automatic, shutter is set to manual, slow shutter is suitable for showing the track of moving scene, and fast shutter is suitable for capturing the moment of moving scene. Aperture priority A, shutter auto, aperture, etc. are set to manual. Small aperture can shoot scenes with large depth of field, and large aperture is suitable for blurred shallow depth of field before and after shooting. Manual M file, fully manual, can be used for special lighting environment or personalized composition. The most difficult mode to control.