Focal length mm to horizontal angle of view (degrees) at APS-C Canon 22.3mm

1 Focal length = 169.750153 Horizontal angle of view · profile-dependent conversion · context: sensor profile

Direct Answer

1 Focal length equals 169.750153 Horizontal angle of view

This result depends on the selected profile context: sensor profile.

For 2 Focal length, this profile returns 159.661743 Horizontal angle of view.

Converter Calculator

1 Focal length (mm) =
169.750153 Horizontal angle of view (degrees)

Explanation

APS-C Canon 22.3mm uses crop factor 1.6 and sensor width 22.3 mm. HFOV = 2 x atan(22.3 / (2 x focal_mm)) in degrees. For input 1 mm, output is 169.750153308 deg.

For Focal length to Horizontal angle of view, the active sensor profile determines the conversion constants applied to every value.

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Keep the same profile in both directions to avoid mixing lookup systems that use different size mappings.

Method & Reference (Verified)

  • Method basis: profile-bound mapping; constants depend on the selected profile encoded in the route.
  • Profile reference: sensor profile.
  • Consistency rule: keep the same profile in mirror direction to avoid mixing incompatible mappings.

Common Conversion Values

Focal length (mm)Horizontal angle of view (degrees)
1 169.750153
2 159.661743
5 131.694162
10 96.224617
14 77.069635
18 63.551829
24 49.837591
35 35.340786
50 25.142534
85 14.946377
100 12.724402
135 9.442981
200 6.381873