Nikon D780 DSLR Camera (Body Only) - Manual (Page 839)

793 Technical Notes
4 Can be used only if the lens focal length and maximum aperture are
specified using the [
Non-CPU lens data ] item in the setup menu.
Some lenses may, however, fail to produce the desired results even if
the focal length and maximum aperture are supplied. Use [
Spot
metering ] or [ Center-weighted metering ] if the desired results are
not achieved.
5 For improved precision, specify the lens focal length and maximum
aperture using the [
Non-CPU lens data ] item in the setup menu.
6 Can be used in mode M at shutter speeds one step or more slower
than the flash sync speed.
7 Use stop-down metering. In mode A , stop aperture down using the
controls on the lens and lock exposure before shifting the lens. In
mode
M , stop aperture down using the controls on the lens and
meter exposure before shifting the lens.
8 Exposure compensation required with AI 28–85mm f/3.5–4.5,
AI 35–105mm f/3.5–4.5, AI 35–135mm f/3.5–4.5, or AF-S 80–200mm
f/2.8D lenses.
9 Requires a PK-12 or PK-13 auto extension ring. A PB-6D may be
required depending on camera orientation.
10 Can be used with stop-down metering; in mode A , stop aperture
down using the controls on the bellows attachment and meter
exposure before taking photographs.
• Lines may appear at high ISO sensitivities when aperture is adjusted
during movie recording or live view photography.