Nikon Micro-Nikkor 200mm f/4 IF User Manual
Page 16
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Depth of Field
Depth of field refers to the zone of acceptable
focus extending in front of and behind the
plane of sharpest focus. As this zone is excep
tionally shallow at high reproduction ratios,
previewing is desirable before shooting. To pre
view, press the depth-of-field button on the
camera and the lens will close to the preselect
ed aperture to allow you to see how much
background and foreground is in focus. Depth
of field can also be observed by reading the
color-coded indicators inscribed on the lens
barrel. A pair of orange lines on either side
of the white distance scale index line corre
sponds to f/32 which is the same color on the
aperture scale. At close distance, so little is in
focus that the depth-of-field tables on pages
13 ~ 14 are more useful.