I just started a 5D3. What's the difference between P file and A file? Where are the macro and portrait shooting modes?

A file is also called AV file, and aperture takes precedence. Manually adjust the aperture, and the machine automatically sets the shutter, which is convenient for controlling the depth of field. P file is a fool file, which is basically automatic. Parameters such as exposure compensation can be manually adjusted for P file.

There is no macro and portrait shooting mode, and there is no mode for SLR. . The parameters are all adjusted manually, and only the hue has a mode. . This shooting mode is only available in card machine or micro-single. . . Macro or portrait shooting is done by different lenses. . . Not the fuselage

Generally speaking, AV TV M 3 files are used to take pictures. . . P files are rarely used. . . P file is often used, and SLR is meaningless.