The formula tag has no wiki summary.
9
votes
5answers
1k views
Is there a formula to calculate DOF?
I am pretty clear about that DOF depends on:
Focal length
Aperture
Distance from subject
Sensor size
and more (as pointed in the comment).
But what is the question here is: Is there any formula ...
5
votes
3answers
595 views
What is the formula for percent of frame filled at a specific distance and focal length?
I am thinking about buying a new lens specifically to take photos of distant targets (birds, bears, etc). I currently own the Canon 70-300 IS USM, which is a nice lens, but I find that if I want to ...
2
votes
1answer
188 views
How much does extending affect range of focusing distances?
It's well known that moving a lens away from imaging surface will decrease both minimum and maximum focusing distance. There are times when it would be good to know how much those distances will ...
