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Depth-of-Field Calculator

Here you have a universal depth-of-field calculator and a learning tool for your photography. The two rows allow you to make immediate comparisons between lenses and formats, and to see how focal length, focusing distance, circle of confusion, hyperfocal distance and subject magnification relate to depth of field. You may also be interested in my Field of View Calculator and Shutter Speed Calculator.

Feet Meters Dudak's Depth-of-Field Calculator
ROW 1 - 35mm/FX (CoC .025)  APS-C/DX (CoC .017)   Custom CoC
ROW 2 - 35mm/FX (CoC .025)  APS-C/DX (CoC .017)   Custom CoC
Focal Length (mm) Lens
f/stop
Focus
Distance
Near
Depth
Far
Depth
Total
Depth
Hyperfocal
Distance
Subject
Mag.

Enter Lens, f/stop, Focus Distance

Enter Lens, Near Depth, Far Depth

Circle of Confusion Calculator
Enter Film or Sensor Short Side Dimension (mm) Example: For 35mm film, the short side dimension is 24 Standard
CoC
Critical
CoC

Film Format Dimensions
Format 35 645 6x6 6x7 6x9 4x5 8x10
Short x Long (mm) 24x36 41.5x56 56x56 56x69.5 56x84 96x120 200x250

Some Digital SLR Dimensions
Format Nikon
APS-C
Canon
APS-H
Canon
APS-C
Fuji
APS-C
Sony
APS-C
Sigma
Foveon
Pentax
APS-C
Olympus
4/3
Short x Long (mm) 15.8x23.6
15.6x23.7
18.7x28.1 14.8x22.2
15x22.5
15.5x23 15.7x23.5 13.8x20.7 15.7x23.5
15.6x23.4
13x17.3

Compact Digital Dimensions
Format 1/3.6" 1/3.2" 1/3" 1/2.7" 1/2.5" 1/2" 1/1.8" 1/1.7" 2/3" 1"
Short x Long (mm) 3x4 3.42x4.54 3.6x4.8 4.04x5.37 4.29x5.76 4.8x6.4 5.32x7.18 5.7x7.6 6.6x8.8 9.6x12.8
  from Wikipedia "Image Sensor Format" article

Decimal/Inch Conversion for Feet Calculations
Decimal .083 .167 .25 .333 .417 .5 .583 .667 .75 .833 .917
Inch 1 2 3 4 5 6 7 8 9 10 11

  f/stop Chart
Full 1 1.4 2 2.8 4 5.6 8 11 16 22 32 45 64
Third 1.12 1.58 2.25 3.18 4.49 6.36 8.99 12.71 17.98 25.43 35.95 50.84 71.91
Half 1.19 1.68 2.38 3.37 4.76 6.73 9.51 13.45 19.03 26.91 38.05 53.81 76.11
Third 1.26 1.77 2.52 3.56 5.03 7.12 10.07 14.23 20.14 28.48 40.27 56.95 80.55
Full 1.41 2 2.83 4 5.66 8 11.31 16 22.63 32 45.25 64 90.51
  bottom row shows true f/stop numbers for f/stop at top of next column

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