Field of View Calculator — Camera FOV by Focal Length & Sensor
Calculate horizontal, vertical, and diagonal field of view for any lens and camera sensor. Enter focal length and sensor size to get FOV in degrees and frame coverage at distance.
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Field of View Results
Diagonal FOV
46.8°
Normal
Horizontal FOV
39.6°
Vertical FOV
27.0°
Frame Coverage at 10m
Width
7.20m
Height
4.80m
Sensor: 36×24mm
Focal length: 50mm
Field of View by Focal Length (Full Frame)
| Focal Length | Diag FOV | Category | Best For |
|---|---|---|---|
| 14mm | 114° | Ultra-wide | Architecture, interiors, astrophotography |
| 24mm | 84° | Wide angle | Landscape, street, travel |
| 35mm | 63° | Standard wide | Street, documentary, environmental portrait |
| 50mm | 47° | Normal | General purpose, natural perspective |
| 85mm | 29° | Short telephoto | Portraits, headshots |
| 135mm | 18° | Telephoto | Portraits, sports, compressed background |
| 200mm | 12° | Telephoto | Wildlife, sports, distant subjects |
| 400mm | 6° | Super telephoto | Birds, motorsport, moon photography |
Frequently Asked Questions
How do I calculate field of view for a camera?
Field of view (FOV) is calculated from the focal length and sensor dimensions using the formula: FOV = 2 × arctan(sensor dimension ÷ (2 × focal length)). Enter your focal length and sensor size above and the calculator does this instantly for horizontal, vertical, and diagonal FOV.
What is field of view in photography?
Field of view is the angular extent of the scene captured by a lens and sensor combination, measured in degrees. A wide-angle 14mm lens on full frame has a ~114° diagonal FOV (you see a very wide scene), while a 400mm telephoto has just ~6° (a very narrow slice of the scene).
How does focal length affect field of view?
Shorter focal lengths (e.g., 14mm, 24mm) produce wide fields of view — great for landscapes, architecture, and tight spaces. Longer focal lengths (e.g., 200mm, 400mm) produce narrow fields of view — ideal for wildlife, sports, and distant subjects. Doubling the focal length roughly halves the FOV.
How does sensor size affect field of view?
A smaller sensor with the same focal length gives a narrower field of view — this is the crop factor effect. An APS-C sensor (1.5× crop) with a 50mm lens behaves like a 75mm on full frame. Micro Four Thirds (2× crop) with 50mm behaves like 100mm.
What is frame coverage and how is it calculated?
Frame coverage is the physical width and height of the scene captured at a given subject distance. It's calculated as: frame width = 2 × distance × tan(horizontal FOV ÷ 2). Useful for planning shots — e.g., knowing if a 50mm lens at 10m will capture a 7-meter-wide scene.
What field of view do I need for portraits?
Portrait photographers typically use 85mm–135mm on full frame (30°–18° diagonal FOV). This produces flattering subject-to-background separation and avoids the facial distortion visible with wide lenses. On APS-C, 50mm–85mm gives equivalent results.