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#1
November 5th 04, 01:08 AM
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Apo-Rodagons
I have a 90mm. apo-Rodagon and have had the 80mm. apo-Rodagon N recommended
as a replacement. Aside from the slight difference in coverage, are there any noticable differences in resolving power, contrast, ets? What is the optimum working aperture for the 80mm? Thank you. Paul 
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#2
November 5th 04, 07:45 AM
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In article ,
"P. Meschter" wrote: I have a 90mm. apo-Rodagon and have had the 80mm. apo-Rodagon N recommended as a replacement. Aside from the slight difference in coverage, are there any noticable differences in resolving power, contrast, ets? Yes What is the optimum working aperture for the 80mm? 2 stops down Thank you. Paul -- To reply no_ HPMarketing Corp.
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#3
November 5th 04, 07:45 AM
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In article ,
"P. Meschter" wrote: I have a 90mm. apo-Rodagon and have had the 80mm. apo-Rodagon N recommended as a replacement. Aside from the slight difference in coverage, are there any noticable differences in resolving power, contrast, ets? Yes What is the optimum working aperture for the 80mm? 2 stops down Thank you. Paul -- To reply no_ HPMarketing Corp.
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