Archived posting to the Leica Users Group, 1997/11/17
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Marc J Small wrote: >Well, much as it pains me to admit EVERYTHING invented by Zeiss isn't >perfect, any retrofocus lens will simply NOT perform to the same standard >as a REALLY GREAT non-retrofocus lens. The difference will be minute, but >it will be there. N Sekha wrote: <<< But there is one very big disadvantage with non-retrofocus lenses. They have a big vignetting problem. The only way round this is to have a ND center filter, which corrects this but it costs two stops. So effectively the lens is tow stops slower. Example: the 16mm Hologon for Contax. Retrofocus lenses on the other hand do not have this problem. >>>> I want to believe you, but, unfortunately, I couldn't find vignetting problems from my 4.5/38 Biogon. Further, even if existing, I like my 3.4/21 M SA pix more than from the 4/21 R SA, or from the 2.8/21 non-asph of a friend of a friend :) Alf