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Old 26-01-2007, 09:53 AM
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[1ponders] (Paul)
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Join Date: Nov 2004
Location: Obi Obi, Qld
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As the aperture gets smaller (higher f stop - longer exposure time needed) by restricting the iris the effects become more noticeable. The number of spikes you get will depend on the number of blades in the iris.
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