To those who know, I am suffering vignetting in four corners of the image with the following combination: EOS3, EF 20mm f2.8 USM and B+W 72 Circular polarization filter F-Pro. Removing the (original) lens hood doesn't help and the filter is visually clean (holding the filter againts the light) besides some minor / transparent and cristal like contamination when I look through the viewer, most critically. So little that I cannot imagine this is the root cause.
- Anyone of you know what this is or might be? - The filter / lens combination seems OK or am I wrong? Please advice. Thanks in advance, Hans Korremans * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
