On 7 Sep 2003 at 15:25, Gary Fisher wrote: > > > > > Does anyone know if this is the extent of the -S > addition to the EF > > mount? > > > > My only question then is why is there an > additional indexing mark (the > > white dot [well, square])?
I can't answer the question for sure, but I feel pretty sure that there is some physical change that prevents the S lens from mounting to other bodies. Why? Because using the S lens in, for example, a 10D would allow the mirror to contact the back of the lens, with potentially very expensive consequences. I don't think Canon wants to face the PR and liability issues that would result from that. The mirror in the 300D is mounted on an articulated hinge, which moves the mirror *back* in addition to pivoting it, allowing it to clear the lens. No other current body has that feature. HTH, ===== Bob Meyer I wish I knew what I know now, when I was younger... http://www.meyerweb.net/epson __________________________________ Do you Yahoo!? Yahoo! SiteBuilder - Free, easy-to-use web site design software http://sitebuilder.yahoo.com * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
