Exposure & Lux Calculator

Convert between EV (Exposure Value), lux, foot-candles, and camera settings (ISO / aperture / shutter speed). Essential for cinematographers, photographers, and lighting technicians matching camera exposure to light levels.

Camera Settings

ISO / ASA

Aperture (f-stop)

Shutter Speed

Incident vs Reflected

Light Level Output

Exposure Value (EV)—

Required lux (incident)—

Required foot-candles—

Candela (point source ref)—

Scene description—

T-stop equivalent—

Cine: frame rate—

180° rule shutter—

—

EV

Exposure value

—

lux

Incident light

—

fc

Foot-candles

—

scene

Description

EV Reference Table (ISO 100)

EV	Lux	Foot-candles	Scene	Example Settings

The calculators and tools on Formula Factory are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. Formula Factory makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.