Nikon AI Micro-NIKKOR 105mm f-4 User Manual
Page 14
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Depth of Field
Depth of field refers to the zone of acceptable
i 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
preview, press the depth-of-field button on
the camera and the lens will close to the
preselected 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. The pairs of colored lines on either
side of the white distance scale index line
correspond to f/numbers of the same color on
the aperture scale. At close distances, so little
is in focus that the depth-of-field tables on
pages 13 ~ 14 are more useful.