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14 votes
6 answers
12k views

What is the meaning of "stopped down"?

Was reading this answer (emphasis mine): It also tells us that the lens was stopped down, as if it were wide open there would be no corners to cause diffraction, regardless of the number of ...
Billy ONeal's user avatar
  • 3,350
68 votes
4 answers
153k views

What does f-stop mean?

What does f-stop mean? Is it the same thing when people say "2 stops" for example?
matt burns's user avatar
  • 6,036
57 votes
9 answers
144k views

What is aperture, and how does it affect my photographs?

How does aperture affect my photographs? Why should I care about the aperture with which a photo was taken?
Dan McClain's user avatar
  • 2,087

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