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Lighting & Flash
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Cameras, Formats & Systems (60)
Colour & Colour Management (60)
Composition & Visual Design (60)
Exposure & Metering (60)
Files, Metadata & Workflow (60)
Film, Darkroom & Historic Processes (60)
Focus & Depth of Field (60)
Genres, Movements & Theory (60)
Lighting & Flash (60)
Motion, Video & Creative Techniques (60)
Optics, Lenses & Filters (60)
Post-Processing & Retouching (60)
Printing, Display & Output (60)
Sensors & Digital Capture (60)
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Inverse Square Law
Lighting & Flash
stops (EV)
The rule that light from a point source falls off in proportion to the square of the distance, so doubling the distance quarters the illumination.
E ∝ 1 / d²
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