Nikon D850 - Page 310

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A Calculating Angle of View
The camera can be used with Nikon lenses for 35 mm (135) format
cameras. If a 35 mm format lens is attached, the angle of view will be
the same as a frame of 35 mm film (35.9 × 23.9 mm).
If desired, the Image area option in the photo shooting menu can be
used to choose an angle of view different from that of the current lens.
If a 35 mm format lens is attached, you can reduce the angle of view by
1.5× or 1.2× by selecting DX (24×16) or 1.2× (30×20) to expose a
smaller area, or change the aspect ratio by selecting 5 : 4 (30×24) or
1 : 1 (24×24). The sizes of the areas exposed by different Image area
options are shown below.
1 Lens
2 FX (36×24) picture size
(35.9 × 23.9 mm, equivalent
to 35 mm format camera)
3 1.2× (30×20) picture size
(29.9 × 19.9 mm)
4 DX (24×16) picture size
(23.5 × 15.7 mm, equivalent
to DX format camera)
5 Picture diagonal
6 Angle of view (FX (36×24);
35 mm format)
7 Angle of view
(1.2× (30×20))
8 Angle of view (DX (24×16);
DX format)
9 5 : 4 (30×24) picture size
(29.9 × 23.9 mm)
10 1 : 1 (24×24) picture size
(23.9 × 23.9 mm)
11 Angle of view (5 : 4 (30×24))
12 Angle of view (1 : 1 (24×24))
1
2
3
4
5
6
7
8
1
5
10
9
6
11
12
2