Diffraction ratio
Ultraviolet Visible Light Infrared
ƒ-stop 350 400 470 550 590 665 720 780 830 930 1000
ƒ/1.4 0.3 0.35 0.41 0.48 0.51 0.58 0.63 0.68 0.72 0.81 0.87
ƒ/2 0.43 0.5 0.58 0.68 0.73 0.83 0.89 0.97 1.03 1.15 1.24
ƒ/2.8 0.61 0.7 0.82 0.96 1.03 1.16 1.25 1.36 1.44 1.62 1.74
ƒ/4 0.87 0.99 1.17 1.37 1.47 1.65 1.79 1.94 2.06 2.31 2.48
ƒ/5.6 1.22 1.39 1.63 1.91 2.05 2.31 2.5 2.71 2.89 3.23 3.48
ƒ/8 1.74 1.99 2.33 2.73 2.93 3.3 3.58 3.87 4.12 4.62 4.97
ƒ/11 2.39 2.73 3.21 3.76 4.03 4.54 4.92 5.33 5.67 6.35 6.83
ƒ/16 3.48 3.97 4.67 5.46 5.86 6.61 7.15 7.75 8.25 9.24 9.93
ƒ/22 4.78 5.46 6.42 7.51 8.06 9.08 9.83 10.65 11.34 12.7 13.66
ƒ/32 6.95 7.95 9.34 10.93 11.72 13.21 14.3 15.5 16.49 18.48 19.87
Diffraction ratio legend
No visible diffraction
Visible diffraction may slightly impact image sharpness
Visible diffraction will impact image sharpness

How To Use This Table

  • Select a Camera. If your camera is not listed, request to add it here.
  • Select a Filter. If a column is dimmed, that wavelength of light will not be transmitted by the selected filter.
  • Select the row of the ƒ-stop you wish to shoot at.