Viktor,
I use a Yongnuo YN560EX (GN 58) with a cube beamsplitter in this setup: viewtopic.php?p=224611#p224611

I don't recall having used more than 1/8 power setting for 40X 0.70 DIC, although our systems are very different

Excellent and very clarifying comparison! Thanks for performing and posting it.

Very nice colors and texture!

ADMIN NOTE:
Please note that this thread is better placed here at Technical and Studio Photography -- Macro and Close-up forum. Moved from Nature Photography -- Macro and Close-up

Thank you!

PM sent

My Pentax Auto-Bellows suffered an accident and one of the dovetail shaped nylon sliders broke beyond repair. I have a spare bellows but it has one of those parts partially cracked. Knowing its age very likely the plastic has turned rigid and brittle. Does anyone know a source of parts replacement? ...

That would be very interesting, thanks!

Excellent image, although I can't see the camel

Dave, could you compare the convenience of the Saul's and Retrodiode's illuminators for continuous illumination in the same microscope? I'm interested in light intensity, regulation, light quality and mainly ability to set Kölher. Just curiosity because I have both continuous and flash illumination ...

For objectives marked 160/ this distance is 150mm (this is due to the classic microscope design: the "primary" image projected by the objective is expected at the eyepiece aperture placed 10mm below the end of the microscope tube) Anyway, a 4X objective is pretty tolerant for changes in this distanc...

In this Javier's recent post you can see the oxalate crystals I was referring to, take a look at the linked full size image and you will see few one at extinction:

https://www.photomacrography.net/forum/ ... 75#p271475

Optical activity can be demonstrated in solids as well as solutions. D and L rotary quartz, for example. Sure, although I think that this refers to different causes: organic molecules chirality is caused by the spatial asymmetry of their molecular structure while in quartz this is just impossible a...

Soki,

please clarify the difference between the two Stauroneis frustule images you've posted: different objective I assume (and wich ones?) different focus point...

Leonard, I'm not able to solve your question because of lack of experience with Oxalate and not enough knowledge, but maybe could help to clarify few points - Chirality demostrates in solution (often not easily without a precision polarimeter), not sure up to what point it could be related with bire...

I've used this big scalpel blades with hand microtomes with good success when teaching Microscopy techniques at High School level:
https://www.swann-morton.com/product/33.php

Jörgen, thanks so much for the complementary info and sample images!

Sym P. le wrote: ↑

Tue Feb 23, 2021 7:49 pm

Only a microscopist can consider .05 mm a success.

Well, we are microscopists
In nanotech it also will matter a lot and in corpuscle Physics it would be a whole world