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Old September 23, 2012, 02:34 PM   #39
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Join Date: October 14, 2009
Location: Sunshine and Keystone States
Posts: 4,448
Yes, it's just like the principle of using a smaller aperture on a camera to increase the depth of field. As long as there is enough light available, it can make a dramatic difference by blocking the off-axis rays that make the image fuzzy.
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