Nikon D200BODY Bedienungsanleitung PDF herunterladen (Seite 186)

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Technical Notes—Optional Accessories

CPU lenses can be iden ti ﬁ ed by the presence of CPU contacts. Type G lenses are

marked with a “G” on the lens barrel, type D lenses with a “D.”

CPU lens Type G lens Type D lens

Type G lenses are not equipped with a lens aperture ring. Unlike other CPU lens-

es, there is no need to lock the aperture ring at the minimum aperture setting

(maximum f/-number) when using a type G lens.

Picture Angle and Focal Length

The diagonal picture angle of the D200 is less than that of a 35-mm cam era.

When cal cu lat ing the focal length of the lenses for the D200 in 35-mm format,

mul ti ply the focal length of the lens by about 1.5:

Option Approximate focal length (mm) in 35-mm format (modiﬁ ed for picture angle)

35-mm camera 17 20 24 28 35 50 60 85

D200 25.5 30 36 42 52.5 75 90 127.5

35-mm camera 105 135 180 200 300 400 500 600

D200 157.5 202.5 270 300 450 600 750 900

The size of the area exposed by a 35-mm

camera is 36 × 24 mm. The size of the

area exposed by the D200, in contrast,

is 23.6 ×15.8 mm, meaning that the diago-

nal picture angle of a 35-mm camera is ap-

proximately 1.5 times that of the D200.

Cal cu lat ing Picture Angle

Picture size (D200)

Picture size (35-mm format)

Lens

(23.6 mm × 15.8 mm)

Picture diagonal

(36 mm × 24 mm)

Picture angle (35-mm format)

Picture angle (D200)

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Nikon D200BODY Bedienungsanleitung Seite 186