Derval
Revision as of 05:33, 25 January 2015 by Dustin McAmera (talk | contribs) (Added speeds, noted that it's an everset shutter, +present tense.)
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The Derval is a 2-leaf shutter with speeds 1/25, 1/50 and 1/100 second, plus 'B' and 'T' modes. It was produced by the German company Gauthier. It is an everset shutter.
