Archived posting to the Leica Users Group, 1997/11/17
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]At 12:50 AM 11/17/97 -0600, 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. This is true only for the Hypergon, Topogon, and Hologon and their offshoots. The Pleon and Aviogon and their offshoots, such as the Biogon, don't suffer from vignetting. Marc msmall@roanoke.infi.net FAX: +540/343-7315 Cha robh bas fir gun ghras fir!