35mm Equivalent Focal Length & Aperture
Convert a lens focal length and aperture to their full-frame (35 mm) equivalents for any sensor size, free online.
À propos de cette calculatrice
Equivalent focal length = focal length × crop factor, and equivalent aperture = f-number × crop factor (for the same depth of field and total light). A 25 mm f/1.8 lens on a Micro Four Thirds body (crop 2.0) frames like 50 mm and gives the depth of field of f/3.6 on full frame.