Horizontal angle of view (degrees) to Focal length (mm) for Smartphone 1/2" class
1 Horizontal angle of view (degrees) = 366.68368 Focal length (mm) ยท camera-equivalence calculation for Smartphone 1/2" class
Direct Answer
On Smartphone 1/2" class, a 50 horizontal angle of view needs about a 6.862422 mm lens
This result uses the fixed Smartphone 1/2" class sensor profile (crop factor 5.6).
To reach 14 Horizontal angle of view (degrees), you need 26.061909 Focal length (mm) on Smartphone 1/2" class.
Converter Calculator
366.68368 Focal length (mm)
SwitchExplanation
Formula: focal_mm = 6.4 / (2 x tan(HFOV/2)). Why: this page keeps Smartphone 1/2" class fixed, so crop factor and sensor width stay explicit for every calculation.
Smartphone 1/2" class: a sensor profile with crop factor 5.6 and sensor width (horizontal) 6.4 mm, used as the fixed framing basis for this page.
Horizontal angle of view (degrees): a camera-equivalence quantity in this family that depends on the selected crop model.
Focal length (mm): a camera-equivalence quantity in this family that depends on the selected crop model.
This route is useful when you know the target horizontal framing angle and need the focal length required on Smartphone 1/2" class.
This page is sensor-profile dependent rather than universal because camera equivalence changes with sensor geometry (Smartphone 1/2" class).
Common Conversion Values
| Horizontal angle of view (degrees) | Focal length (mm) |
|---|---|
| 14 | 26.061909 |
| 24 | 15.054816 |
| 28 | 12.834499 |
| 35 | 10.149103 |
| 50 | 6.862422 |
| 70 | 4.570074 |
| 85 | 3.492187 |
| 135 | 1.325483 |
| 200 | -0.564246 |
Frequently Asked Questions
Which sensor assumptions are fixed for horizontal angle of view (degrees) to focal length mm?
Horizontal angle of view (degrees) to focal length mm is fixed to Smartphone 1/2" class, crop factor 5.6, sensor width 6.4 mm.
How do I reverse deg to mm for Smartphone 1/2" class?
Use the opposite-direction page for Smartphone 1/2" class to convert focal length (mm) back to horizontal angle of view (degrees) with the same sensor assumptions.
Can horizontal angle of view (degrees) to focal length mm replace full lens-design simulation?
No. Horizontal angle of view (degrees) to focal length mm provides framing and geometry approximations, not full optical-model behavior.