Crop factor equivalents

Focal length and aperture in full-frame terms — compare sensor formats

Input

Your sensor

Focal length, mm

Aperture f/

Equivalent focal

Light disadvantage: 1.2 stops

53 мм

Equivalent aperture (DoF): f/2,7
Crop factor: ×1.5

Equivalents table

35 мм f/1.8 → 53 мм f/2,7 on full frame

Equivalent focal = real × crop. Equivalent aperture for DoF — same ×crop (f/2.8 on M43 ≈ f/5.6 blur-wise, but exposure stays f/2.8). Sensor area drives noise: each crop stop doubles noise.