[Leica] IMG: Macro Experiment with Leica-R 60 Elmarit Macro Lens

[Don Dory]

But I can be very patient and still have friends at KEH.

On Thu, Oct 8, 2020, 3:14 PM Jim Nichols <jhnichols at lighttube.net> wrote:

> Thanks for the comments, Don.  I think you will find that 1.4s are very
> scarce.
>
> On 10/8/20 3:02 PM, Don Dory via LUG wrote:
> > I think that the difference is close enough that I would use either
> > depending on magnification needed.  The extension tube is higher in
> > contrast which helps perception of sharpness.  In all things compromise
> is
> > inherent so choice will be made based on priorities of the moment.  I do
> > appreciate the research as I now will be looking for an inexpensive R
> > teleconverter although I might try for a 1.4.
> >
> > On Thu, Oct 8, 2020 at 1:10 PM Jim Nichols <jhnichols at lighttube.net>
> wrote:
> >
> >> I've been using the Leica-R 60 macro lens for a few days and began
> >> wondering which gave the best results, adding the dedicated extension
> >> tube or the tube plus the Leica-R 2X Extender.  So, I did a kitchen
> >> counter experiment.  Using kitchen lights and a shiny dime, I first
> >> combined the dedicated extension tube with the 2X extender and mounted
> >> the assembly on an old Star-D tripod.  I adjusted the height so that the
> >> image of the dime filled the height of the frame, and took several
> >> exposures.  Here is the resulting image:
> >>
> >> http://www.gallery.leica-users.org/v/OldNick/20201008-DSCF2180.JPG.html
> >>
> >> I then removed the 2X Extender and mounted the lens and extension tube
> >> as it was intended to be used.  I took several images of the dime, which
> >> now filled about half the height of the frame, and cropped the resulting
> >> image to match the first one:
> >>
> >> http://www.gallery.leica-users.org/v/OldNick/20201008-DSCF2192.JPG.html
> >>
> >> It is my opinion that the lens/tube combination is sharper without the
> >> 2X Extender, even with enlargement.  I am ignoring differences in
> >> lighting with this setup.
> >>
> >> --
> >> Jim Nichols
> >> Tullahoma, TN USA
> >>
> >>
> >> _______________________________________________
> >> Leica Users Group.
> >> See http://leica-users.org/mailman/listinfo/lug for more information
> >
> >
> --
> Jim Nichols
> Tullahoma, TN USA
>
>
> _______________________________________________
> Leica Users Group.
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