Practice question · Multiple choice
"Exposure is the thing that is conserved; the picture is the thing that changes." What does this trade-off mean when trading shutter duration for aperture size?
Hints
- Which distinct visual properties do aperture and shutter speed govern independently?
- If identical total light reaches the film, what visual characteristics still shift?
Show the answer
C. Image brightness stays fixed whilst motion blur and depth of field alter
Why
Photometric exposure is balanced across stops, but secondary optical qualities differ: shutter alters motion recording and aperture alters depth of field. Sensitivity governs noise rather than aperture trade-offs, and pupil size directly changes with f-number.
Practise Aperture, Shutter and Sensitivity
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More questions on Aperture, Shutter and Sensitivity
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