----- Original Message ----- From: "John Lovda" <[EMAIL PROTECTED]> Sent: Friday, January 28, 2005 2:49 PM
> I just won a really nice used EF 70-200mm 2.8 L non-IS > lens on ebay. The previous owner was a sports > photographer and the silver lens mount looks a little > worn and scratched up (the seller stated this and had > a picture). I called Canon parts and they told me > there are something like 8-10 DIFFERENT versions with > baseplate thicknesses running from 1.5mm to 2.8mm. I > would have measure my current one with a micrometer. > > Has anyone heard of this before? John, I once asked my CPS technician about why my, theoretically parfocal, 70-200 shifts focus from one end to the other. He told me that to rectify this meant trying mounts of various thickness until the "correct" one was found. Apparently, this has no bearing on optical performance, though I have my doubts. Sounds like you want to change it for cosmetic reasons? You know you don't see it when it's on a camera? ;�) CraigZ -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 265.8.1 - Release Date: 27/01/2005 * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
