Horizontal angle of view (degrees) to focal length mm at Smartphone 1/2.55" class

1 Horizontal angle of view = 343.76595 Focal length · profile-dependent conversion · context: sensor profile

Direct Answer

1 Horizontal angle of view equals 343.76595 Focal length

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

For 2 Horizontal angle of view, this profile returns 171.869885 Focal length.

Converter Calculator

1 Horizontal angle of view (degrees) =
343.76595 Focal length (mm)

Explanation

Smartphone 1/2.55" class uses crop factor 6 and sensor width 6 mm. focal_mm = 6 / (2 x tan(HFOV/2)). For input 1 deg, output is 343.765950388 mm.

Horizontal angle of view to Focal length is profile-bound here: the selected sensor profile controls the mapping used by calculator and reference table.

Read more

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)
1 343.76595
2 171.869885
5 68.711297
10 34.290157
14 24.433039
18 18.941255
24 14.11389
35 9.514784
50 6.433521
85 3.273926
100 2.517299
135 1.242641
200 -0.528981