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A Calculating Angle of View
The size of the area exposed by a 35mm camera is 36 × 24 mm.
The
size of the area exposed by the D7200 when DX (24×16) is selected for
Image area in the photo shooting menu, in contrast, is 23.5 ×
15.6 mm, meaning that the angle of view of a 35mm camera is
approximately 1.5 times that of the D7200 (when 1.3× (18×12) is
selected, the size of the area exposed decreases, further reducing the
angle of view by about 1.3×).
Lens
35 mm format picture size (36 × 24 mm)
Picture diagonal
Picture size when 1.3× (18×12) is selected for
Image area (18.8 × 12.5 mm)
35 mm format angle of view
Angle of view when 1.3× (18×12) is selected for Image area
Picture size when DX (24×16) is selected for
Image area (23.5 × 15.6 mm)
Angle of view when DX (24×16) is selected for Image area
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