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Camera Field of View Calculator

From focal length, shooting distance, and sensor size, calculate the real area captured in your photo (width x height) and the angle of view. Great for planning group and product shots.

Input

Calculate the real-world area captured in frame (width x height) and the angle of view from your lens focal length, subject distance, and sensor size. Handy for planning group-photo and product-shot compositions.

mm
m
Sensor size

Result

Captured area (width x height)

2.16×1.44m

Area approx. 3.11 m²

Width

2.16 m

Height

1.44 m

Diagonal

2.60 m

Angle of view & capture breakdown

ItemValue
Horizontal angle of view39.6°
Vertical angle of view27.0°
Captured width2.16 m
Captured height1.44 m
Captured diagonal2.60 m

How it works

  • The captured area is found from "sensor dimension x shooting distance / focal length". For example, a full-frame sensor (36mm wide) with a 50mm lens at 3m gives a width of 36 x 3 / 50 = 2.16m.
  • The angle of view is calculated as theta = 2 x atan(sensor dimension / (2 x focal length)), shown separately for horizontal and vertical.
  • With the same lens, a larger sensor captures more, while a longer focal length captures less. Moving closer to the subject also shrinks the captured area.
  • This calculation is a guideline based on the thin-lens approximation. It is accurate for general shooting where the distance is much larger than the focal length, but may differ from reality in macro range or with special lenses.
  • Sensor sizes use each manufacturer's representative nominal values. Results may vary slightly if your specific camera has different dimensions.