Camera Field of View Calculator
Calculate angle of view and field of view for any camera and lens combination
Camera & Lens Setup
Lens focal length in millimeters
Distance from camera to subject
Calculation Results
Angle of View
Field of View at 10 meters
Sensor: 23.5×15.6mm (28.2mm diagonal)
Crop Factor: 1.53× (vs. full frame)
Lens Type: Standard
35mm Equivalent: 77mm
Practical Examples
Good for:
- • Portrait photography
- • Street photography
- • General purpose
Coverage at 10 meters:
- • Area: 14.7 sq meters
- • Aspect ratio: 1.51:1
- • Can fit: People, furniture
Common Sensor Sizes
Focal Length Guide
Understanding Camera Field of View
Angle of View vs Field of View
The angle of view is an absolute measurement that depends only on the focal length and sensor size. It represents the angular coverage of your lens and remains constant regardless of distance to your subject.
The field of view is a relative measurement that shows the actual physical area your camera can capture at a specific distance. It increases proportionally with distance.
Key Factors
- •Focal Length: Longer focal lengths = narrower field of view
- •Sensor Size: Larger sensors = wider field of view
- •Distance: Greater distance = larger field of view coverage
Mathematical Formulas
Angle of View:
AOV = 2 × arctan(sensor_size / (2 × focal_length))
Field of View:
FOV = 2 × tan(AOV/2) × distance
Example Calculation:
Setup: 50mm lens, APS-C sensor (23.5×15.6mm)
Horizontal AOV: 2 × arctan(23.5/(2×50)) = 26.5°
FOV at 10m: 2 × tan(26.5°/2) × 10 = 4.8m
Tip: Use crop factor to compare different sensor sizes. Full frame has a crop factor of 1.0.
Practical Applications
Event Photography
Plan shots for weddings, concerts, and gatherings
- • Calculate group photo coverage
- • Determine minimum distance for full venue
- • Choose appropriate lens for venue size
Wildlife Photography
Estimate subject size in frame at various distances
- • Calculate minimum distance for safety
- • Determine required focal length for subject size
- • Plan equipment for different animals
Architecture
Capture buildings and interiors effectively
- • Calculate required distance for full building
- • Choose lens for interior space constraints
- • Plan composition for architectural details