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. Your MSIE and later Netscape browser will print the tables, others must print screen to the clipboard and print from some other application.

Depth-of-Field - Unit of Measure is meters.
Film
Format		 Focal
Length
(mm)		 f/No Object
Distance		 Near
Distance		 Far
Distance		 Depth
of
Field		 Hyperfocal
Distance		 We Got
Buttons

Depth-of-Field Table for the above Focal Length
f/1.4 f/2 f/2.8 f/4 f/5.6 f/8 f/11 f/16 f/22 f/32 f/45
"Inf"

The formula used for this table.

This page written by Michael C Gillett

and extended by Ralph Barker to cover wider aperture lenses common with 35mm, as well as typical large-format lenses. As a result, f-stops at either end of the chart may not apply to a particular lens.

The table is based on the following Circle of Confusion sizes (in mm): 35mm = .025, 645 = .043, 6x6 = .049, 6x7 = .053, 6x9 = .062, 4x5 = .094, 5x7 = .126, 8x10 = .188.

You may use this code freely for any non-commercial purpose, written authorization for all other uses.

Please direct any questions, suggestions or comments via Email to: gillettm@home.com