Nikon D3s Body Only D3S User's Manual - Page 396
Picture Angle and Focal Length, Auto DX crop, FX 36×24
UPC - 018208254668
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A Picture Angle and Focal Length The D3S can be used with Nikon lenses for 35mm (135) format cameras. If Auto DX crop is on 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 from FX (36×24), 1.2× (30×20), DX (24×16), and 5 : 4 (30×24). If a 35mm format lens is attached, the picture angle could be reduced by 1.5 × by selecting DX (24×16) or by 1.2 × by selecting 1.2× (30×20), to expose a smaller area, or the aspect ratio could be changed by selecting 5 : 4 (30×24). FX (36×24) picture size (36.0 × 23.9 mm, equivalent to 35mm format camera) 1.2× (30×20) picture size (30.0 × 20.0 mm) DX (24×16) picture size (23.5 × 15.6 mm, equivalent to DX format camera) Lens 5 : 4 (30×24) picture size (30.0 × 23.9 mm) Picture diagonal Picture angle (FX (36×24); 35mm format) Picture angle (1.2× (30×20)) Picture angle (DX (24×16); DX format) Picture angle (5 : 4 (30×24)) n 370