Re: EOS EF 20-35 with extension tubes

[Robert Meier]

--- Pierre Bellavance <[EMAIL PROTECTED]> wrote:
> What surprises me is that the magnification ratios
> of these two lenses are 
> almost the same (0.14 for the 20mm vs 0.13 for the
> 20-35) while their 
> closest focusing distances are quite different.

Because the highest magnification of the 20-35 is not
at 20mm but at 35mm. With a longer focal length your
minimum distance can be bigger compared to a lens with
a shorter focal length and same max. magnification.

Robert

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