Focal length (mm) to Horizontal angle of view (degrees) for Smartphone 1/2" class
1 Focal length (mm) = 145.291951 Horizontal angle of view (degrees) ยท camera-equivalence calculation for Smartphone 1/2" class
Direct Answer
On Smartphone 1/2" class, a 50 mm lens gives about 7.323871 horizontal angle of view
This result uses the fixed Smartphone 1/2" class sensor profile (crop factor 5.6).
For 14 Focal length (mm), this gives 25.750003 Horizontal angle of view (degrees) on Smartphone 1/2" class.
Converter Calculator
145.291951 Horizontal angle of view (degrees)
SwitchExplanation
Formula: HFOV = 2 x atan(6.4 / (2 x focal_mm)) in degrees. 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.
Focal length (mm): a camera-equivalence quantity in this family that depends on the selected crop model.
Horizontal angle of view (degrees): a camera-equivalence quantity in this family that depends on the selected crop model.
This route is useful when you know the focal length on Smartphone 1/2" class and want the resulting horizontal framing angle.
This page is sensor-profile dependent rather than universal because camera equivalence changes with sensor geometry (Smartphone 1/2" class).
Common Conversion Values
| Focal length (mm) | Horizontal angle of view (degrees) |
|---|---|
| 14 | 25.750003 |
| 24 | 15.189287 |
| 28 | 13.039604 |
| 35 | 10.447895 |
| 50 | 7.323871 |
| 70 | 5.234827 |
| 85 | 4.311999 |
| 135 | 2.715736 |
| 200 | 1.833309 |
Frequently Asked Questions
Which sensor assumptions are fixed for focal length mm to horizontal angle of view (degrees)?
Focal length mm to horizontal angle of view (degrees) is fixed to Smartphone 1/2" class, crop factor 5.6, sensor width 6.4 mm.
How do I reverse mm to deg for Smartphone 1/2" class?
Use the opposite-direction page for Smartphone 1/2" class to convert horizontal angle of view (degrees) back to focal length (mm) with the same sensor assumptions.
Can focal length mm to horizontal angle of view (degrees) replace full lens-design simulation?
No. Focal length mm to horizontal angle of view (degrees) provides framing and geometry approximations, not full optical-model behavior.