Camera Field of View & Crop Factor
Horizontal/vertical/diagonal FOV & 35mm-equivalent focal for any sensor.
FOV formula uses actual sensor dimensions, not just crop factor.
Horizontal Field of View
39.6 °
FOV Breakdown
Vertical FOV
27.0°
Diagonal FOV
46.8°
35mm Equivalent
50 mm
A 50mm on full-frame is the classic "nifty fifty" — roughly matches human single-eye perspective.
Did you know?
Phone cameras have a "crop factor" of roughly 6–8× — a 5.6 mm phone lens gives the same view as a ~35 mm full-frame lens.
Formula
FOV = 2 × atan(sensorSize / (2 × focal)) · EqFocal = focal × cropFactor
FAQs
Why does crop factor matter?
A smaller sensor sees a smaller slice of the lens image → your effective focal length increases. A 50mm on APS-C is like 75–80mm on full frame.