EOS Re: Macro photography: extension vs close-up lenses

[Henry Posner/B&H Photo-Video]

At 02:30 AM 07/28/2001, you wrote:
>     I don't have an extension tubes nor any close up lenses. I don't even
>have a macro lens. But I do have a 2X converter and it allows me to do some
>macro work with my tele-zooms.
>     For example, the 75-300 allows you to focus to postcard size.

A teleconverter changes the lens' effective focal length w/out altering the 
lens' minimum focus distance. So, a Canon 75~300/4-5.6 (with a min focus 
distance of 4.9') plus a 2x teleconverter becomes a 150~600/8-11 with a min 
focus distance of 4.9'.

While the result is there, the method may not be the most elegant, compared 
to either extension tubes or dual; element (achromat) close-up diopters.
--
regards,
Henry Posner
Director of Sales and Training
B&H Photo-Video, and Pro-Audio Inc.
http://www.bhphotovideo.com

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