Quote Originally Posted by HDNitehawk View Post
At the risk of ridicule from other's on the forum, here is a link that might give you some information, and start you down the path of disenlightenment.

http://www.kenrockwell.com/tech/focus.htm

Not everything there is wrong I guess :-)

here is another resource:
http://en.wikipedia.org/wiki/Depth_of_field
http://en.wikipedia.org/wiki/F-numbe..._image_quality