EOS Re: What's the point of EF 100mm Macro?

[Henry Posner/B&H Photo-Video]

At 03:51 AM 04/18/2001, you wrote:
>The magnification of Canon's EF 2.8/100mm macro at 31cm (the closest focus
>distance) is 0.48, or 1:2.1
>
>The magnification of the 28-90mm USM "Kit" at 38 cm is 0.31 or 1:3.2.
>
>- - these numbers are from Canon brochure and calculated by f/Calc for PalmOS.
>
>So what is the point I'm not seeing? Canon macro is supposed to give 1:1 (I
>don't know the english word - ratio?). How can that be possible if it can 
>focus
>no closer than 31 cm?

According to Canon USA, the near focus distance for the 100/2.8 EF macro is 
12" and for the newer USM version is 5.9"
12" = 30.48 cm and 5.9" = 14.986 cm.
--
regards,
Henry Posner
Director of Sales and Training
B&H Photo-Video, and Pro-Audio Inc.
http://www.bhphotovideo.com

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