> I remember in one of Canon technical report/reference guide (back in > 1996, when Canon introduce their 180 L macro) they listed these lenses > working distance for 1:1 magnification as follows: > EF 50mm f/2.5 Compact Macro 9 cm (w/ 1:1 converter) > EF 100mm f/2.8 Macro 15 cm > EF 180mm f/3.5L Macro USM 25 cm > I'll check again if I can found the technical report at home tonight.
Hi Bambang, Thank you for your post. I would really appreciate if you could check your source. Especially the value for the old EF 100mm f/2.8 Macro. I only have an old Canon EOS "Close-up System" brochure from 1992 (PUB.C-E1-CUA) which predates the 180L macro. Surprisingly, it does not show *ANY* WORKING distances at all! Nor does it appear in the Lens Technical Report 7 in the technical library at http://www.cps.canon-europa.com http://www.cps.canon-europa.com/servlet/binaryFiles?blobOid=314909 Cheers Julian Loke * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
