Search found 596 matches

by dmillard
Sun Jun 09, 2019 9:19 pm
Forum: Equipment Discussions
Topic: 4X Surprise Lens vs Nikon 4x Plan APO Can you tell the diff?
Replies: 67
Views: 7459

One last guess - a 25mm Fujinon C-mount lens?
by dmillard
Sun Jun 09, 2019 6:53 pm
Forum: Equipment Discussions
Topic: 4X Surprise Lens vs Nikon 4x Plan APO Can you tell the diff?
Replies: 67
Views: 7459

25mm f/0.95 Voigtlander Nokton? Wrong filter thread, but it's a shot in the dark :)
by dmillard
Sat Jun 08, 2019 7:57 pm
Forum: Equipment Discussions
Topic: S1R pixel shifting
Replies: 35
Views: 2901

Thank you Lou - this is an impressive demonstration of the camera's potential!

Best regards,
David
by dmillard
Tue May 21, 2019 1:42 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Exposure changes in Stack
Replies: 1
Views: 1827

This sounds as though the flashes may not be fully charged prior to each exposure. If you are using small flash units powered by AA batteries, you may need to use fresh batteries, and wait considerably longer than 3 seconds for them to fully recharge. Alternatively, you may wish to use an AC adapter...
by dmillard
Thu May 16, 2019 5:08 am
Forum: Equipment Discussions
Topic: Info On LMPLFL10X Objective
Replies: 22
Views: 5278

Re: Info On LMPLFL10X Objective

Regardless, I'll stick it on the end of a 200mm tube lens and update this thread w/ test images after I receive it. . It's designed to be used with a 180mm tube lens (such as Olympus's UTLU), but will work fine with 200mm, albeit at 10/9 its nominal magnification, producing an 11.1x magnification. ...
by dmillard
Sun Jan 27, 2019 5:02 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Tube Flocking
Replies: 2
Views: 3335

Very interesting comparison! In case you missed it, Rik Littlefield previously posted some very persuasive images of the Doodlebug Beetle Black cardstock here:
https://www.photomacrography.net/forum/ ... =doodlebug
by dmillard
Sun Jan 06, 2019 6:45 pm
Forum: Equipment Discussions
Topic: Sensor cleaning - using swabs more than once
Replies: 12
Views: 6511

The first image is a pleasure to look at (in addition to the useful information conveyed). :)
by dmillard
Tue Jan 01, 2019 6:16 am
Forum: Equipment Discussions
Topic: Leica HR 4x/0.45 Objective On Ebay How is That Even Possible
Replies: 22
Views: 4928

edited to add: anyone tested the Edmund/Optem(I believe) 5x NA 0.225 objectives? If so, how good is the coverage? Mark Goodman tested it on a Nikon D300 (APS-C). His results can be found under Microscope objectives: http://www.coinimaging.com/lens_tests_new.html He was not impressed - his results c...
by dmillard
Mon Dec 31, 2018 8:39 am
Forum: Equipment Discussions
Topic: nikon M plan 20x 0.40 elwd - CA question
Replies: 10
Views: 2033

Re: nikon M plan 20x 0.40 elwd - CA question

Hi all, I have question about Nikon M plan 20 0.40 210/0 ELWD. Is it normal, that objective has so much CA? Does anyone have similary result? Hello Filip, Some CA is often seen with this objective, but nevertheless it is still capable of producing good results. I did a comparison test on here eons ...
by dmillard
Sun Dec 30, 2018 5:20 pm
Forum: Equipment Discussions
Topic: Schneider 28mm f2.8 Componon Perf Stacked is Extremely Good
Replies: 32
Views: 5485

ray_parkhurst wrote:Looks like that "Apo" lens will have some strong red hues when focused 200um high.
And even more in this "Apo" lens! :shock:
Image
by dmillard
Sun Dec 30, 2018 11:08 am
Forum: Equipment Discussions
Topic: Schneider 28mm f2.8 Componon Perf Stacked is Extremely Good
Replies: 32
Views: 5485

I have an Rodagon D 120 f5.6 APO ( optimized at 1:1) Hello Sebastian, I previously had a copy of this lens. The Apo-Rodagon D 120mm f/5.6 is optimized for duplication at a 2:1 ration when used in the forward orientation, and at 1:2 when reversed. The lens would perform best as a taking lens at 1:2 ...
by dmillard
Thu Dec 20, 2018 4:50 pm
Forum: Equipment Discussions
Topic: Tube lens tests for MFT and FF
Replies: 31
Views: 10977

A Nikon 105mm f2.8 was unusable because of extreme vignetting, but the 135 f4.5 was quite good, as you noted. It produced about 7.2X measured with the 10X Nikon objective, and lost less peripherally than with the Mitty Leonard Just curious about the 135mm f/4.5, were you referring to the Nikon 135m...
by dmillard
Wed Nov 28, 2018 12:10 pm
Forum: Equipment Discussions
Topic: tube lens comparison
Replies: 17
Views: 3857

Re: tube lens comparison

However, the Olympus UIS system is designed only for an image circle of 22 mm, the UIS2 system for over 26 mm. This *might* limit the usable image circle of the U-TLU (which is a UIS component, not UIS2) to Micro 4/3, or possibly APS-C. Hello Enrico, I just reread your comments a little less hastil...
by dmillard
Tue Nov 27, 2018 6:03 pm
Forum: Equipment Discussions
Topic: tube lens comparison
Replies: 17
Views: 3857

Hello Jin, I also have both tube lenses. Inspired by Charles Krebs' post here , I mounted an Olympus super-widefield trinocular head (which incorporates a U-TLU) on my Nikon UM-2 Measurescope, and use it with both Olympus UIS/UIS2 and Mitutoyo objectives. I have been very pleased with the results on...