Archived posting to the Leica Users Group, 1996/04/16
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>Roger,
>
>One additional comment. Essentially, you are looking at a trade off. On
the positive side, if you use the 2X
>extender, additional lens to subject distance will be gained - although
such distance may not be needed in
>many applications. On the negative side, two f-stops will be lost. Since
the lens will most likely be closed
>down to around f22 at 1:1, such a light loss may present a significant
handicap. This depends, of course, upon
>whether natural (my preference) or artificial light is employed.
>
>Bill Christensen
Good points, Bill. My preference is always natural light whenever possible.
Do I correctly infer that the ELPRO allows focusing between the 1:2 and
1.1:1 magnification ratios and that the maximum aperture of 2.8 still holds?
I'm new to Leica and macro lenses. My micro and macro work was done years
ago with Nikon F and extension tubes necessitating all the exposure
calculations etc. Though difficult by today's standards, I knew, then, how
to work within the scope of that equipment. This is actually much easier,
but, alas, I am much older!
--
Roger Beamon, Natural History Interpreter & Photographer
Docent: Arizona-Sonora Desert Museum
INTERNET: beamon@primenet.com