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❚❚
Zoom and Depth of Field
Before focusing, rotate the zoom ring to adjust the focal length
and frame the photograph. If the camera offers depth-of-field
preview (stop down), depth of field can be previewed in the
viewfinder.
Note
: The lens uses Nikon’s
I
nternal
F
ocusing (IF) system. Unlike
other lenses, focal length decreases as the focus distance
shortens. Note that the focus distance indicator is intended only
as a guide and may not accurately show the distance to the
subject and may, due to depth of field or other factors, not show
∞ when the camera is focused on a distant object.
To lock the zoom ring, rotate it to the 18 mm position and slide
the zoom lock switch to
LOCK
. This prevents the lens extending
under its own weight while the camera is being carried from
place to place.
❚❚
Aperture
Aperture is adjusted using camera controls.
Zoom and Maximum Aperture
Changes to zoom can alter the maximum aperture by up to
1
1
/
3
EV. The camera however automatically takes this into
account when setting exposure, and no modifications to camera
settings are required following adjustments to zoom.
