EOS EF 20-35 - Magnification Ratio at 20mm.

[Pierre Bellavance]

I hadn't thought of that...

So if I want to take pictures of flowers from very close at 20mm, I wonder 
what difference it makes, shooting both lenses at closest focus, at 0.8 
foot (9.6 inches) with the 20mm and 1.1 feet (13.2 inches) with the 20-35.

Anyone know the magnification ratio on the 20-35 at 20mm and 1.1 feet?

Pierre

At 16:25 2/25/2001 -0800, you wrote:

>--- 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

*
****
*******
***********************************************************
*  For list instructions, including unsubscribe, see:
*    http://www.a1.nl/phomepag/markerink/eos_list.htm
***********************************************************