Calculate exposure value for photography settings.
Camera Settings
Exposure Result
EV @ ISO 1009.9
Night sports / Bright street
Current Settings EV9.9Actual EV for ISO 100
Technically, EV is a logarithmic scale. An EV of 15 is standard for a bright sunny day. An EV of 0 corresponds to an exposure of 1 second at f/1.0.
Overview
Exposure Value (EV) combines aperture and shutter speed into a single number. EV 0 = f/1 at 1 second. Each EV step = 1 stop of light. Essential for understanding exposure relationships and using light meters.
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Pro Tips
Higher EV = brighter scene (more light).
Sunny 16 rule: f/16, 1/ISO = correct exposure.
EV 15 = bright sun; EV 9 = overcast; EV 3 = twilight.
ISO doesn't affect EV, only sensor sensitivity.
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Fun Facts
"EV 0 = f/1 at 1 second (baseline)."
"Each +1 EV = double the light; -1 EV = half."
"Light meters display EV for given ISO."
"Night photography: EV -3 to -6 typical."
Formula: EV = log2(N²/t) where N = f-number, t = shutter time
