Search found 34 matches

by dy5
Sun Jul 03, 2022 6:02 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Mantis faces
Replies: 0
Views: 17

Mantis faces

Looking through some older images while doing a backup, these mantis portraits caught my eye. They are from stacks of 10-15 images taken through an Zeiss Stem 11 APO dissecting microscope and processed with software provided by Zeiss (pre-Zerene days). Lighting by fiberoptic light pipes and coffeecu...
by dy5
Sat Jun 25, 2022 4:45 am
Forum: Photography Through the Microscope
Topic: Jumbo
Replies: 3
Views: 433

Re: Jumbo

Thanks, Bruce - very helpful. The name certainly matches the behavior.
by dy5
Thu Jun 23, 2022 5:14 am
Forum: Photography Through the Microscope
Topic: Some amoebas
Replies: 5
Views: 226

Re: Some amoebas

Thanks, Bruce. Buoyancy control - that's a clever adaptation. I'm learning that amoebas are so much more than moving, morphing blobs. Lou, the nightmare scenario is about right. When it was some distance away, that amoeba seemed to change course to go toward the algae. How could it 'know' that food ...
by dy5
Tue Jun 21, 2022 10:43 am
Forum: Photography Through the Microscope
Topic: Some amoebas
Replies: 5
Views: 226

Some amoebas

These are all from my neighbor's backyard pond. The IDs are all tentative - any help with that would be much appreciated. DIC and high-speed flash (the latter hardly necessary to freeze movement of these subjects). 1. Arcella sp. Empty tests are common, but I've much less frequently seen one with th...
by dy5
Fri Jun 17, 2022 5:21 am
Forum: Macro & Microscopy Articles
Topic: Microscopy theory and techniques videos
Replies: 0
Views: 87

Microscopy theory and techniques videos

For anyone who hasn't run across it already, the site iBiology.org ( https://www.ibiology.org ) has a whole series of videos on microscopy that are very helpful and enjoyable. The topics cover everything from the history of microscopy through the optics through specialized techniques. The technical ...
by dy5
Tue Jun 14, 2022 4:13 am
Forum: Nature Photography -- Macro and Close-up
Topic: Vertical frames!
Replies: 6
Views: 334

Re: Vertical frames!

All wonderful. The robber fly eyes are mesmerizing.
by dy5
Sun May 22, 2022 4:14 am
Forum: Photography Through the Microscope
Topic: A Choanoflagellate and Lacrymaria
Replies: 3
Views: 401

Re: A Choanoflagellate and Lacrymaria

Thanks!

Cheers, David
by dy5
Thu May 19, 2022 1:25 pm
Forum: Photography Through the Microscope
Topic: A Choanoflagellate and Lacrymaria
Replies: 3
Views: 401

Re: A Choanoflagellate and Lacrymaria

Adding a photo to show the length of the choanaflagellate flagellum (hence the odd orientation). Also this one had just ingested its lunch.
by dy5
Wed May 18, 2022 5:57 am
Forum: Equipment Discussions
Topic: lighting cage with CAMVATE clamps and arms
Replies: 5
Views: 560

Re: lighting cage with CAMVATE clamps and arms

Rik - Thanks for all the info on your cage. Looks great, highly practical. As others have noted, your post has stimulated plans to build something like it (maybe with 10-series t-slot for added rigidity/stability, but expensive). Thanks, too, for the link to the Allan Walls videos - quite extensive,...
by dy5
Tue May 17, 2022 10:44 am
Forum: Photography Through the Microscope
Topic: A Choanoflagellate and Lacrymaria
Replies: 3
Views: 401

A Choanoflagellate and Lacrymaria

A couple of photos of creatures living in my neighbor's backyard pond. The first is a group of choanoflagellates, possibly Salpingoeca sp., sitting on a spherical algae, Golenkinia sp. (I think). A quick bit of research turned up that the choanoflagellates share a common ancestor with all multi-cell...
by dy5
Sun May 15, 2022 9:31 am
Forum: Equipment Discussions
Topic: Alternatives to Equipement Exchange or eBay?
Replies: 7
Views: 300

Re: Alternatives to Equipement Exchange or eBay?

I've had good luck with the Fred Maranda Buy/Sell board. Macro equipment of various sorts shows up occasionally, e.g. Novoflex bellows, macro focus rails, flashes of all kinds, and occasionally an enlarger lens or other exotic glass. No microscope equipment that I can remember seeing.
by dy5
Sun May 01, 2022 6:25 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Mantis eye cleaning
Replies: 6
Views: 470

Re: Mantis eye cleaning

Really interesting, informative SEM! It's easy to imagine those paddles doing a good cleaning job. You motivated me to look for more info, and I found this summary, quoted in a 1990 paper on the mantises of New Zealand: "... the anterior end of the fore-femur is manipulated by the mouth-parts, and p...
by dy5
Sat Apr 30, 2022 4:45 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Mantis eye cleaning
Replies: 6
Views: 470

Mantis eye cleaning

Taken in my photo studio, i.e., the dining room table. A praying mantis nymph grooming. Creobroter sp. Body length approximately 15mm. The second photo is an enlargement showing the brush of thick hairs on the leg that the mantis uses specifically to keep its eyes clean. Nikon D800, Voigtländer 125m...
by dy5
Mon Apr 18, 2022 7:01 am
Forum: Nature Photography -- Macro and Close-up
Topic: Denmark butterflies
Replies: 0
Views: 381

Denmark butterflies

Going through some older images, I found a few that might be worth sharing. These butterflies were in a field near Odense, Denmark.

Nikon D7000, Leica R 100mm f2.8 macro
by dy5
Thu Apr 14, 2022 4:49 am
Forum: Photography Through the Microscope
Topic: Jumbo
Replies: 3
Views: 433

Jumbo

Discovered in my neighbor's backyard koi pond. An aggressive predator. Watched one devour the insides of a nauplius.
DIC, high-speed flash