Maybe it is to account for the varying balancing points of the lenses with the same tripod collar?
Mike Keith Green wrote: > Interestingly, the RRS catalogue (Late 2000 issue) quotes different mounting > plates: > > B97L for the 100 f2.8 Macro > B82 for the 70-200 f4L and 300 f4L (non IS) > B84 for the 70-200 f2.8L (non IS) and 300 f4L IS, or B86 if the lens collar > is marked 'RING B' (latest style). > > Cheers > > Keith -- Michael Shupe M.J.Shupe Photography Michigan Tech University www.northernlightsgallery.com * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
