Flash Guide Number Calculator
A flash guide number calculator determines correct aperture and flash distance settings for photography lighting. Guide Number = aperture × distance. Higher guide numbers indicate more powerful flashes; knowing the GN lets you predict exposure without test shots.
Difficulty:intermediate
References
🔒
100% Gratis
Ingen registrering
✓
Præcis
Verificerede formler
⚡
Øjeblikkelig
Resultater med det samme
📱
Mobilvenlig
Alle enheder