Nikon S2J00200401 user manual Custom Setting 19Aperture Control during Zoom, 171

Variable

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F19 Aperture Control during Zoom

Custom Setting 19:Aperture Control during Zoom

On lenses with a variable focal length (for example, Micro Nikkor or zoom lenses), maximum aperture varies with focal length. This setting determines how such changes in the maxi-

mum aperture affect the f/-number specified by the user in Fixed OK

aperture-priority auto or manual exposure modes. By de- fault, aperture remains fixed at the specified f/-number while

the lens is zoomed in or out. If desired, the camera can instead be set to vary the f/ -number with focal length so that aperture remains a fixed number of steps from the maximum setting. Suppose, for example, that a 70–210 mm, f/4–5.6 AF Zoom- Nikkor lens is mounted on the camera, and an aperture of f/8 is selected when the lens is zoomed out to 70 mm. At this zoom position, f/8 is two steps from the maximum aperture of f/4. Now imagine that the lens is zoomed in to 210 mm. If fixed aperture is selected, aperture will remain constant at f/8. If aperture is set to vary with focal length, however, aperture will decrease to f/11, two steps from f/5.6, the maximum value for this focal length.

Option	No.	Description
Fixed		Aperture does not vary with lens focal length.
(default)
Variable		Aperture varies with lens focal length.

CUSTOM SETTINGS AND OTHER MENUS—CUSTOM SETTINGS

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pg. 84 Exposure mode

171