ZoomCam

ZoomCam / Free tools

Camera field of view calculator

Estimate horizontal viewing angle and how much of a scene fits across the frame at a chosen distance.

Camera and subject

Use the physical sensor width and focal length from the same camera module.

Physical width in millimeters, not image pixels.
Physical lens focal length in millimeters.
Distance in meters from the camera to the subject plane.

Estimated framing

Horizontal field of view

Viewing angle72 degrees
Scene width at distance145.2 m wide
From center to either edge72.6 m each side

This is a rectilinear geometry estimate. Lens distortion, stabilization crop, aspect ratio and phone processing can change the visible frame.

Use field of view to plan phone framing

Field of view describes how wide a camera sees. A shorter focal length or wider sensor shows more of the scene. A longer focal length or sensor crop shows a narrower area and makes distant subjects occupy more of the frame.

Find the right phone camera values

Use the actual focal length and physical sensor width for one camera module. Do not enter a full-frame equivalent focal length with a phone sensor width, because those values describe different formats.

What the distance result means

  • The scene-width result covers the horizontal frame at the entered distance.
  • Doubling subject distance doubles the width covered.
  • Digital stabilization or zoom may crop the result further.

Move from planning to framing.

ZoomCam keeps long-range photo and video controls within reach on iPhone and Android.