Exposure & Metering
3 terms
Illuminance
Exposure & Metering
lux (lx)
The amount of light arriving on a surface per unit area, measured in lux, independent of what that surface does with it.
E = Φ / A
Incident-light Metering
Exposure & Metering
EV
Measuring the light falling onto a subject rather than the light reflecting off it, using a handheld meter with a white diffusing dome.
ISO
Exposure & Metering
ISO (arithmetic scale)
The standardised measure of how strongly a camera amplifies the signal it captures, determining image brightness for a given exposure.
ISO ∝ 1 / H_required