Nikon D610 User Manual page 116

Choose Image Area
Choose the image area used when a non-DX lens is attached or
a DX-lens is attached with Off selected for Auto DX crop
(0 91).
Option
FX (36×24)
1.0×
c
(FX format)
DX (24×16)
a 1.5×
(DX format)
FX format (36×24)
d
A
Image Area
The selected option is shown in the information display.
A
The Viewfinder Display
The DX format crop is shown at right; the area outside the crop can be
viewed in gray when Off is selected for Custom Setting a4 (AF point
illumination, 0 222).
A
See Also
See page 63 for information on the crops available in movie live view.
90
Description
Images are recorded in FX format using the full
area of the image sensor (35.9 × 24.0 mm),
producing an angle of view equivalent to a
NIKKOR lens on a 35 mm format camera.
An area at the center of the image sensor
23.5 × 15.7 mm is used to record pictures in DX
format. To calculate the approximate focal length
of the lens in 35mm format, multiply by 1.5.
image circle
FX format
DX format (24×16)
image circle
DX format
DX format