Focal length mm to horizontal angle of view (degrees) at Smartphone 1/2" class

1 Focal length = 145.291951 Horizontal angle of view · profile-dependent conversion · context: sensor profile

Direct Answer

1 Focal length equals 145.291951 Horizontal angle of view

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

For 2 Focal length, this profile returns 115.989234 Horizontal angle of view.

Converter Calculator

1 Focal length (mm) =
145.291951 Horizontal angle of view (degrees)

Explanation

Smartphone 1/2" class uses crop factor 5.6 and sensor width 6.4 mm. HFOV = 2 x atan(6.4 / (2 x focal_mm)) in degrees. For input 1 mm, output is 145.291950727 deg.

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

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

Focal length (mm)Horizontal angle of view (degrees)
1 145.291951
2 115.989234
5 65.238486
10 35.489343
14 25.750003
18 20.161196
24 15.189287
35 10.447895
50 7.323871
85 4.311999
100 3.665679
135 2.715736
200 1.833309