Exposure · ND · Shutter

ND filter math, shutter angle ↔ speed, and stops between any two settings.

ND filter converter

Edit any field — the others update. ND density (0.3 = 1 stop), filter factor (ND8 = 3 stops), or stops directly.

Stops

Density (ND0.x)

Factor (NDx)

ND0.3 · 1ND0.6 · 2 ND0.9 · 3ND1.8 · 6 ND3.0 · 10

Stack two NDs

Filter A (stops)

Filter B (stops)

Shutter angle ↔ speed

Frame rate (fps)

Shutter angle (°)

Shutter speed (1/x)

45°90° 172.8°180° 360°

Stops between two values

Mode

From