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Old Nov 2, 2007, 11:20 AM   #1
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Can someone please explain this concept to me in a way that makes sense? :-S



Thank you!
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Old Nov 2, 2007, 1:27 PM   #2
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See http://en.wikipedia.org/wiki/Circle_of_confusion

The circle of confusion is a fancy term for when an object is out of focus. When the light reflected by an object is out of focus it forms a circle instead of the point it would form if itwere in focus.

The circle of confusionproducesbokeh.

See also http://www*****eamyguy.net/iris/index.htm
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Old Nov 2, 2007, 8:07 PM   #3
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daddyorchips84 wrote:
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Can someone please explain this concept to me in a way that makes sense? :-S



Thank you!
The Circle of Confusion (CoF) comes into play when talking about depth of field.

Strictly speaking, objects at only one precise distance are in focus in a photograph. The real question is much the same as in many other siturations where it is not possible to get things exactly right - What is good enough? The circle of confussion is a measure of "good enough"

If you choose a large CoF (sloppy idea of "good enough") you will have a large depth of field. If you want a small CoF (very tight idea of "good enough"), you will have a smaller depth of field.

Google Circle of Confusion for more precise explainations. Be prepared to spend a bit of time with the math of optics.
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