A: Aperture-Priority Auto; Non-Cpu Lenses (0 308) - Nikon D7200 User Manual

A: Aperture-Priority Auto

In aperture-priority auto, you choose the aperture while the
camera automatically selects the shutter speed that will produce
the optimal exposure.
To choose an aperture between the
minimum and maximum values for the
lens, rotate the sub-command dial while
the exposure meters are on.
A

Non-CPU Lenses (0 308)

Use the lens aperture ring to adjust
aperture. If the maximum aperture of the
lens has been specified using the Non-CPU
lens data item in setup menu (0 224)
when a non-CPU lens is attached, the
current f-number will be displayed,
rounded to the nearest full stop. Otherwise the aperture displays will
show only the number of stops (F, with maximum aperture displayed
as FA) and the f-number must be read from the lens aperture ring.
54
Control panel
Sub-command dial
Monitor