-----Original Message-----
From: [EMAIL PROTECTED] [mailto:owner-eos@;a1.nl] On Behalf Of Julian Loke
Sent: Friday, November 08, 2002 5:41 AM
To: [EMAIL PROTECTED]
Subject: EOS Seeking macro information 


I am trying to compile some data for macro lenses, but I cannot find the
working distances for 1:1, except for my 100 USM macro

???   EF 50mm f/2.5 Compact Macro
???   EF 100mm f/2.8 Macro
149mm EF 100mm f/2.8 Macro USM
???   EF 180mm f/3.5L Macro USM

Should I include any other lenses? (e.g. Sigma, Tamron, Vivitar?)

Cheers
Julian Loke
http://eosdoc.com

===

Hi Julian,

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.

thanks,,, Bambang.

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