02-12-2009, 02:09 AM
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Contributing Editor
Join Date: Feb 2004
Posts: 2,503
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Bokeh: Japanese term referring to quality of the of out-of-focus areas.
Depth-of-field: The area of a photo in which it is deemed sharp enough for the intended viewing purpose (4x6" print, 20x30" print, 100% on the monitor, web-output, etc).
Aperture: Among other things, one of the factors controlling the DOF in a photo. Shallow DOF is achieved using a bigger aperture, other things being equal.
With the above defined, it can be thus mentioned that a large aperture lens can bring about shallow depth of field, but the bokeh can still be terrible. Also bokeh is not necessarily uniform; some lenses are worse at certain apertures compared to others. Always test your lenses!
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Baka. Soku. Zan. - The justice behind the dysORDer.
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