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Old Sep 23, 2010, 2:25 AM   #6
jWest's Avatar
Join Date: May 2010
Posts: 71

Originally Posted by peripatetic View Post
I'm afraid you've firmly grasped the wrong end of the stick here.

Aperture is the size of the hole at the front of the lens.

It has NOTHING to do with where the lens is focussed.

If you set the aperture to say f8, you can focus at distances of 1m, 2m, 3m, ... 1000m, ... infinity. The same is true for all apertures. All lenses have a minimum distance at which they are able to focus, but between that distance and infinity, they are all able to focus at any distance at any aperture.

You're probably confused about DOF, but that's something entirely different.
I'm a noob.

I always thought aperture controlled both DOF and focus. Thank you peripatetic, that was the answer I needed.

OK, to sound even more incompetent here... how does focus work?
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