LENS CALCULATOR — FOV, FOCUS & FRAMING

Free lens calculator for broadcast television production. Calculate field of view (FOV), focus distance, and framing for Fujinon and Canon B4-mount lenses used in ENG, EFP, studio, and sports applications.

FOV Calculator & Lens Comparison

Enter your subject frame width and camera distance to instantly calculate which lenses can make your shot. This field of view calculator compares every lens in the Fujinon and Canon B4-mount lineup — showing FOV range, minimum focus distance, and a clear go/no-go verdict for each lens at your camera position.

Camera Lens Calculator Features

• Field of view (FOV) calculator — see wide and tele coverage at any distance
• Focal length calculator — find the ideal focal length to frame your subject
• Focus distance check against each lens's minimum object distance (MOD)
• 1.4x and 2x extender support with light loss calculation
• Custom lens bank for rental or non-standard lens configurations
• Imperial (ft) and metric (m) unit toggle

Fujinon Broadcast Lenses

Covers the full Fujinon B4-mount lineup — HA studio and EFP zooms, UA 4K UHD lenses, XA ENG lenses, ZA cinema ENG zooms, long-range sports and box lenses, and legacy A/S series ENG glass still common in rental houses. From wide-angle 4.5mm ENG lenses to 800mm+ sports telephotos.

Canon Broadcast Lenses

Covers the full Canon B4-mount lineup — HJ studio and EFP zooms, CJ 4K UHD lenses, Digisuper long-range sports lenses, and legacy KH/KJ series glass still found at rental houses. Includes the Digisuper 86, 95, 100, and 122 used in major sports production worldwide.

Built for working camera operators who need fast, accurate framing checks on real broadcast glass before a shot.