On Mon, 26 Aug 2002 12:01:12 +0100 (BST) =?iso-8859-1?q?Robin=20Sibson?= <[EMAIL PROTECTED]> writes: >> Now, two questions I cannot answer on the basis of the > equipment I have. First, does any other Canon lens > have the extra contacts apart from L-series lenses > designed for use with the extenders, and the 50/2.5? > The only plausible candidate is the non-USM 100/4 > macro; if so, what devices do they link to? Secondly, > what do the extra contacts on the 25mm extension tube > do?
Interesting theory. I think that the 25mm extension tube has the 3 extra contacts only because it shares the same (identical) housing assembly as the 1.4x (original) Dave Herzstein [EMAIL PROTECTED] http://www.kjsl.com/~dave ________________________________________________________________ GET INTERNET ACCESS FROM JUNO! Juno offers FREE or PREMIUM Internet access for less! Join Juno today! For your FREE software, visit: http://dl.www.juno.com/get/web/. * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
