Focal Length Calculator
FL v1.0
50
8mm
24mm
50mm
85mm
200mm
400mm
Full Frame (36×24mm)
1/2.3"
APS-C
Full Frame
Medium
5.0
0.5m
5m
10m
25m
50m
100m
Field of View
39.6° × 27.0°
Angle of View
46.8°
Magnification
0.01×
📊
Field of View
3.6m
Horizontal FOV
39.6°
Vertical FOV
27.0°
FOV Width
3.6 m
FOV Height
2.4 m
📐
Formula
FOV = 2 × arctan(sensor_size / (2 × f))
sensor_size = dimension (mm) | f = focal length (mm)
Magnification = f / (distance − f)
Wider FOV = shorter focal length
📋
Focal Length Guide
- 1 Wide (8-35mm): Landscapes, architecture
- 2 Standard (35-70mm): Street, documentary
- 3 Telephoto (70-200mm): Portraits, sports
- 4 Super Telephoto (200mm+): Wildlife, astronomy