DOFMaster Depth Of Field Calculator

for Windows® operating systems


DOF calculator

Free download

(Read this first if you use Windows XP, Windows 2000,
or Windows NT)

Circles of confusion for digital cameras


Depth of field scales are elegant tools for quickly and easily calculating depth of field and hyperfocal distance. Unfortunately, lens manufacturers don't engrave scales on lenses anymore. Now you can use DOFMaster to make your own scales.

Use DOFMaster to make depth of field scales for use in the field. Just set the focus distance, and read the near and far focus distances. Easily calculate the hyperfocal distance for your lens at any aperture.


Customize the scale for your needs:

  • Use feet or meters on the distance scale

  • Stretch or shrink the distance scale as necessary for focal lengths from 3 mm to 1200 mm

  • Print a scale for any format, digital to 8x10

  • Put as many as 4 focal lengths on a scale

  • Select apertures as small as f/64

  • Choose any circle of confusion


Instructions for calculator assembly are included in the DOFMaster help file.


Free download


Requirements: Windows® 95, Windows® 98, Windows® ME, Windows NT® 4.x, Windows® 2000, or Windows® XP operating systems.


screenshot of DOFMaster program



screenshot of DOFMaster program lens properties page



screenshot of DOFMaster program distances page



image of a depth of field scale printed by the DOFMaster program

Depth of field scales for 28mm, 35mm, 50mm, 70mm, and 80mm
focal lengths. The diameter of this scale is 3.5 inches.


image of a depth of field scale glued to a lens cap
Scales can be small enough to
fit on a lens cap.


Free download











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