Randy, Could you clarify the following comment you made? "I just did a test with my Rodenstock 90mm f6.8 and the difference from f8 and f45 is about a 1/10 of a stop difference. ... Or maybe my Elenchrom power packs aren't accurate but I did get the same exact reading with 5 pops at each aperture. " It sounds as if you did the testing with electronic flash and not hot lights. Is that so? James Small typos corrected. CPAP Therapy is a way to live. |
