Tagged Questions
9
votes
2answers
1k views
Why is depth of field affected by focal length?
As the focal length decreases, the depth of field increases as well. Why is this? I'm not so much interested in a physics lesson as I am interested in a simple, down-to-earth explanation.
7
votes
6answers
2k views
Technically, why is the out of focus area blurred more when using a bigger aperture?
I'm wondering, technically, why and how does the out of focus areas blur more when using a bigger aperture. I think it'd help a lot if I presented a problem that's been driving me nuts for a long ...
13
votes
6answers
1k views
Can a smaller sensor's “crop factor” be used to calculate the exact increase in depth of field?
If APS-C and similar crop-sensor digital cameras have a focal length multiplying effect such that a 50mm lens has an apparent focal length closer to the field of view of an 80mm on a full frame ...
