Search found 122 matches

by dy5
Wed Feb 28, 2024 3:34 am
Forum: Nature Photography -- Macro and Close-up
Topic: Some insects. Some flying. Some not flying.
Replies: 2
Views: 416

Re: Some insects. Some flying. Some not flying.

Very nice! The last two stand out for me. Initially didn't notice the ant in the first one.
by dy5
Wed Feb 28, 2024 3:30 am
Forum: Nature Photography -- Macro and Close-up
Topic: Miscellaneous creatures
Replies: 6
Views: 1225

Re: Miscellaneous creatures

Thanks for you kind comments!

Cheers, David
by dy5
Thu Feb 15, 2024 3:41 am
Forum: Nature Photography -- Macro and Close-up
Topic: Miscellaneous creatures
Replies: 6
Views: 1225

Re: Miscellaneous creatures

Thanks for your comments, Mark and Lou!

A dual function would be clever and economical. Maybe geared to different predators ...

Those spider mimic moths are spectacular!

Cheers, David
by dy5
Mon Jan 15, 2024 5:46 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Cuban roach portrait
Replies: 1
Views: 511

Cuban roach portrait

Digging deep in the archives ... a very early attempt at focus stacking. The subject is a cockroach, Panchlora nivea. The second photo gives a size perspective. . Cuban-roach-portrait.jpg . Cuban roach pennies.jpg . Done with a Zeiss dissecting scope, focus changed by hand, images processed with a s...
by dy5
Sun Jan 07, 2024 9:21 am
Forum: Nature Photography -- Macro and Close-up
Topic: Miscellaneous creatures
Replies: 6
Views: 1225

Miscellaneous creatures

A few images from the archives: . A juvenile basilisk lizard from Roatan (Honduras). Seemed impossible to approach at first, but it didn't seem to mind when I laid down on the ground and slowly crawled toward it. Baby basilisk.jpg . An American Lady ( Vanessa virginiensis ) American lady.jpg . An od...
by dy5
Sun Dec 17, 2023 7:24 am
Forum: Photography Through the Microscope
Topic: Diatom dotting - again, but smaller
Replies: 19
Views: 6361

Re: Diatom dotting - again, but smaller

Wow - very impressive!
by dy5
Tue Nov 28, 2023 6:45 am
Forum: Equipment Discussions
Topic: Interesting Qioptiq lens setup
Replies: 6
Views: 4210

Interesting Qioptiq lens setup

Just posted on eBay https://www.ebay.com/itm/285581570358?mkevt=1&mkpid=0&emsid=e11021.m43.l1120&mkcid=7&ch=osgood&euid=83e2799ea12c492aa7f36da52495324e&bu=43188689766&ut=RU&osub=-1%7E1&crd=20231128063251&segname=11021 The seller says that he does not have any of the 5x objectives available separate...
by dy5
Sat Nov 04, 2023 5:07 am
Forum: Equipment Exchange
Topic: FS: SOLD X-Y linear motion, X-Y tilt, and rotation positioning platform
Replies: 4
Views: 3949

Re: FS: (reduced price once again) X-Y linear motion, X-Y tilt, and rotation positioning platform

How about $200? I've put it up on eBay (at a higher price, of course), but would rather sell it here.
by dy5
Sun Oct 29, 2023 6:47 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Lamprima adolphinae
Replies: 6
Views: 3108

Re: Lamprima adolphinae

Lovely image! Easyzoom does a nice job.

The symmetry of your composition is very appealing. How did you get all the appendages into such precise positions?

Cheers, David
by dy5
Fri Oct 20, 2023 1:52 am
Forum: Equipment Exchange
Topic: FS: SOLD X-Y linear motion, X-Y tilt, and rotation positioning platform
Replies: 4
Views: 3949

Re: FS: X-Y linear motion, X-Y tilt, and rotation positioning platform

Thanks for your comments, Chris. As I understand it, this device as a whole was referred to as a 'goniometer' by x-ray crystallographers. I have a very similar, but slightly larger one made by Philips that I'm keeping for myself. These were designed for very precise, fine positioning, so the excursi...
by dy5
Thu Oct 12, 2023 8:06 am
Forum: Equipment Exchange
Topic: FS: SOLD X-Y linear motion, X-Y tilt, and rotation positioning platform
Replies: 4
Views: 3949

FS: SOLD X-Y linear motion, X-Y tilt, and rotation positioning platform

I believe this device was used for positioning samples in x-ray crystallography. The construction is very high-quality: the machining is excellent, I can't feel backlash in any of the adjustments, the movement is smooth in all directions, the engraving is precise. A lovely piece of work. It provides...
by dy5
Mon Sep 04, 2023 5:27 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: What are current recommendations for 3D from depth map?
Replies: 13
Views: 6682

Re: What are current recommendations for 3D from depth map?

Cam -

The coin reconstruction is very impressive! How many stacked photos did it require?

Cheers - David
by dy5
Tue Aug 22, 2023 5:19 am
Forum: Nature Photography -- Macro and Close-up
Topic: Macro mix from the weekend - II
Replies: 5
Views: 3297

Re: Macro mix from the weekend - II

Very, very nice! For some reason, I always find your robber fly images especially interesting and appealing.

Cheers, David
by dy5
Mon Aug 14, 2023 8:40 am
Forum: Equipment Exchange
Topic: SOLD Stereo microscopes - Nikon and Zeiss
Replies: 0
Views: 1386

SOLD Stereo microscopes - Nikon and Zeiss

I have two very nice stereo microscopes to sell, a Nikon SMZ1500 and a Zeiss Stemi SV11 APO. You can see photos at: https://dy5.smugmug.com/Stereo-microscopes SMZ1500: - introduced around 2000 as their top-of-the-line stereo scope; PM me for PDFs of a sales brochure and instruction manual - this sco...