Archived posting to the Leica Users Group, 2020/10/19
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Jim, both images are clear but I prefer the one with the extension tubes. I have the 2X R Apo extender that produces sharper images than the non-Apo extender. The Apo is a lot more costly but it does provide additional clarity and contrast compared to the non-Apo version. Most people probably wouldn?t notice the difference if the image is sharpened a bit. Thanks for posting. Be well, Richard Richard Clompus California > On Oct 8, 2020, at 11:10 AM, 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