Could still be useful to you when photographing inclusions, I reckon?

David, Really nice setup, many thanks for sharing. Interesting to see how Nikon has implemented the fly's eye lens - quite different from what I'm used to. Clearly works well! And I can see that it actually makes this type of dual illumination setup easier: as long as most of the light hits the fly'...

Awesome images.
Have you shown your beamsplitter setup somewhere? I'd be interested to see it. That Profoto D2 looks like a beast for this purpose, but I'm struggling to see how you'd adapt it.

If you've missed it, here's a site that lets you compare images from the Webb telescope to images of the same objects taken with Hubble:

https://www.webbcompare.com/

Spoiler: it's amazing. Makes Hubble look like a dropped Mitutoyo.

This is not Haematococcus, it is Euglena sanguinea. You know, I am actually starting to think that all of them are Euglena sanguinea. Do you agree? I found this image which really resembles the spherical stage with red center and green periphery: https://d9-wret.s3.us-west-2.amazonaws.com/assets/pa...

Thanks Scarodactyl and PeteM!

Bernd wrote: ↑

Sun Jul 10, 2022 1:59 pm

This is not Haematococcus, it is Euglena sanguinea.

Yes, I eventually identified the slowly moving red blob in images 1, 5 and 6 as Euglena sanguinea. But the red-green algae it's moving around among is surely Haematococcus.

Anyone knows what this thing is?
Added the composite to show its funny behavior, slowly gliding forward, squeezing into tight spaces.

Today I found a nice bloom of what I believe to be Haematococcus pluvialis that also contained some intresting ciliates etc. [Edit: Euglena sanguinea, not Haematococcus!] It seemed like a good opportunity to actually try to produce some photos with my microscopes, and not just buy more stuff. So her...

I don't think I've seen anyone place an additional lens in front of a telephoto lens, and can't see why that would help - the telephoto lens already has a big front lens. I am not sure that I understand this statement. It is quite common to place a diopter on a telephoto lens to get higher m than e...

viktor, thanks for the additional information. I think you should give it a try, making the added aperture as small as you possibly can while retaining the minimum sharpness that you need. That will give you the largest possible telecentric field in front of the lens. Then adjust magnification to c...

From my (admittedly rudimentary) understanding, I think that the idea was that, to make a low magnification telecentric lens, the easiest approach would be to place a large, weak achromat (say, 100mm+ diameter, 200mm+ focal length) in front of a regular objective. Since it is so weak, it doesn't hav...

My priority is to get as large as possible telecentric field at the subject side. Magnification and resolution and of lesser concern. So if I can achieve a 70mm field, I'd be looking at a 36/70=0.51x magnification for full frame, 0.41x for aps-c. This is for performing a study on predator-prey inter...

I've started thinking about building a setup for tracking the movements of small, fluorescently-labeled aquatic organisms. The ideal optics for this project would be a telecentric objective with a large FOV around 120mm-200mm. But before shelling out that kind of money, I'm thinking of building a sm...

I just lucked upon a pair of CFD 10x's on eBay a few weeks ago. Just tried them out with my CFN Plan Fluor objectives. Very clean all the way to edge of the field. Clearly better than the CFWs, but the difference isn't so big that it blows you away. Still very happy I picked them up, I've been looki...