Nikon D780 Reference Manual page 176

❚❚ Choose Image Area
Choose the image area. The following options are available:
Option
c [FX (36×24)]
a [DX (24×16)]
m [1:1 (24×24)]
Z [16:9 (36×20)] Pictures are recorded with an aspect ratio of 16 : 9.
FX (36×24)
1
DX (24×16)
2
1 : 1 (24×24)
3
130 Shooting Settings
Images are recorded in FX format with an angle of
view equivalent to a NIKKOR lens on a 35 mm
format camera.
Images are recorded in DX format. To calculate the
approximate focal length of the lens in 35 mm
format, multiply by 1.5.
Pictures are recorded with an aspect ratio of 1 : 1.
Description
16 : 9 (36×20)
4
DX format (24×16) image
5
circle
FX format (36×24) image circle
6