On Sun, 27 Jan 2002, Marius Sundbakken wrote: > I was just wondering whether the 20/2.8 USM lens requires slim filters or > will the regular ones do? I'm thinking about filters for black and white > photography.
I use this lens with a Cokin P modular filter system. http://www.geocities.com/cokinfiltersystem/accessories.htm With this setup I have to take care to align the filter holder horizontally. There seems to be a little vignetting in the corners which is not visible on mounted slides. I have also a slim Heliopan polarizer which causes no vignetting at all. -- Pawel Nabe Business: +49 / 30 / 245 54 920 PaN Super Sonic Software Service Private: +49 / 30 / 447 33 452 expert for hi tech & low budget Mobile: +49 / 171 / 267 54 63 * ADDITIONAL NOTE: If vignetting is a possible problem, you can use a step-up ring and a larger filter. This was a must on my 28-135 USM lens. However, with the 24mm Canon lens I did not have to use step-up rings with my Cokin P System. john * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
