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March 29th, 2009, 12:39 AM
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#31 |
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Major Player
Join Date: May 2003
Location: York, England
Posts: 518
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Beware of using step up/down rings! On two occasions I have found that focus was compromised. In one case - a 58 mm Century converter used with a 62 mm thread camera - only the central area of the field was sharp; in the other case no focus was possible. Admittedly these were both teleconverters. The extra DOF with WA converters probably means this is not a problem
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