What does a camera's shutter do?
AnswerOpens and closes to let light in for a set time
The shutter controls how long light reaches the sensor or film.
Tech · Facts & stats
Cam facts & stats
7 fact-checked facts about cameras and photography, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
What does a camera flash provide?
AnswerA brief burst of light
A flash gives a short, bright burst of light to illuminate a scene.
Going deeper
The camera obscura, an ancestor of the camera, gets its name from Latin for what?
AnswerDark room
Camera obscura means 'dark chamber'; light through a small hole projects an image inside.
On a camera, what does a higher ISO setting do?
AnswerMakes the sensor more sensitive to light
Higher ISO boosts sensitivity for low light, usually adding more visible noise.
In camera terms, what does SLR stand for?
AnswerSingle-lens reflex
In a single-lens reflex camera, a mirror lets you see through the same lens that takes the picture.
Expert level
Who made the oldest surviving camera photograph, a view from a window in France around 1827?
AnswerNicéphore Niépce
Nicéphore Niépce made 'View from the Window at Le Gras' in the 1820s.
Compared with a telephoto lens, a wide-angle lens has what?
AnswerA shorter focal length
Shorter focal lengths give a wider field of view; longer ones magnify distant subjects.
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