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Old 12-12-2009, 03:01 AM   #317 (permalink)
Bicycle Bob
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The clearance between the smoke stream and the windshield is a function of the original height of the smoke stream, not the body shape. To improve the appearance for advertising, the photographer can eliminate smoke that is showing the turbulence of a convertible, showing only higher streamlines. Also, long exposures will smear a lot of wiggles that would show up with tuft testing.
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