Horizontal angle of view (degrees) to focal length mm at Smartphone 1/1.3" class

1 Horizontal angle of view = 550.025521 Focal length · profile-dependent conversion · context: sensor profile

Direct Answer

1 Horizontal angle of view equals 550.025521 Focal length

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

For 2 Horizontal angle of view, this profile returns 274.991816 Focal length.

Converter Calculator

1 Horizontal angle of view (degrees) =
550.025521 Focal length (mm)

Explanation

Smartphone 1/1.3" class uses crop factor 3.75 and sensor width 9.6 mm. focal_mm = 9.6 / (2 x tan(HFOV/2)). For input 1 deg, output is 550.025520621 mm.

For Horizontal angle of view to Focal length, 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

Horizontal angle of view (degrees)Focal length (mm)
1 550.025521
2 274.991816
5 109.938075
10 54.864251
14 39.092863
18 30.306007
24 22.582225
35 15.223655
50 10.293633
85 5.238281
100 4.027678
135 1.988225
200 -0.84637