ACalculating Picture Angle

The D700 can be used with Nikon lenses for 35mm (135) format cameras. If Auto DX crop is on (the default setting) and a 35mm format lens is attached, the picture angle will be the same as a frame of 35mm film (36.0 × 23.9 mm); if a DX lens is attached, the picture angle will automatically be adjusted to 23.5 × 15.6 mm (DX format).

To choose a picture angle different from that of the current lens, turn Auto DX crop off and select FX format (36 × 24) or DX format (24 × 16). If a

35 mm format lens is attached, the picture angle could be reduced by 1.5 × by selecting DX format (24 × 16), exposing a smaller area.

FX format (36 × 24) picture size (36.0 × 23.9 mm, equivalent to 35mm format camera)

Picture diagonal

Lens

DX format (24 × 16) picture size (23.5 × 15.6 mm, equivalent to DX format camera)

Picture angle (FX format (36 × 24); 35mm format)

Picture angle (DX format (24 × 16); DX format)

The DX format (24 × 16) picture angle is about 1.5 times smaller than the

35mm format picture angle. To calculate the focal length of lenses in 35mm format when DX format (24 × 16) is selected, multiply the focal

length of the lens by about 1.5 (for example, the effective focal length of a 50mm lens in 35mm format would be 75 mm when DX format (24 × 16)

n is selected).

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