Depth-of-Field Calculator - NS 2.0 MSIE 3.0 or later
Required
To find the near, far and hyperfocal distance for a specific lens,
enter the focal length (mm), aperture (f/number) and
the object distance (whole or decimal number). The
JavaScript program will calculate the near, far, depth and hyperfocal distances.
The unit of measure for distances is feet. This can be
overridden by selecting meters.