http://www.trenholm.org/hmmerk/TIAOOFe.pdf
This should give hyperfocal distance shooters something to ponder.
Did you know that you may get better results from focusing at infinity instead of the hyperfocal distance?
This wonderful article explains why this is true. And it matches my own experience.
Better yet, the mathematics makes sense.
Tired of hyperfocal distance shots where things in the distance just don't seem sharp enough for you?
Try this methdology out.
If you don't want to read all about circles of confusion and DOF, etc (the basics), then start at about Chapter 4.
This is where he goes into the "disk of confusion", and how it turns hyperfocal distance focusing all around.
What's the difference? A circle of confusion is applied to the virtual image that shows up on the film. The disk of confusion is applied to the REAL "object world", and makes MUCH more sense. It accounts for the fact that closer objects are bigger, and thus don't need nearly as small a CoC as do distant objects to be rendered recognizable.
A GREAT article, that people should read, apply, and read again.
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