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#1 |
Junior Member
Join Date: Oct 2007
Posts: 4
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Can someone please explain this concept to me in a way that makes sense? :-S
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#2 |
Senior Member
Join Date: Sep 2005
Location: Washington, DC, Metro Area, Maryland
Posts: 13,826
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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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#3 | |
Senior Member
Join Date: Jun 2002
Location: Hay River Township, WI
Posts: 2,512
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daddyorchips84 wrote:
Quote:
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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