Marek,
congratulations! Looks like a great oil painting.

Very impressive pictures!
By the way: A.radiosa is not longer a species name. Many different amoebas take that structure when disturbed or free swimming.

Ernst

It is not that I don'want, but it could become a long lecture about polarization...
I recommend to look for the "Michel-Levy chart of pol. colors". Stack an exact parallel staircase of a sticking tape to compare the color sequence with Levy.

No post processing, apart from a bit of more contrast sometimes. I needed some years to get the results today...
Your are now on the right way - keep on experimenting, also with all kinds of plastic foils for retarders!
Ernst

Hello NicoVB, additionally to my answer to Charles Krebs: The retarder filter sits on a round glass plate between polarizer and condenser, turnible independely from the polarizer. It can be stacked of 2 to 3 layers of colorless clear plastic tape. However you must reach the order II or III of the po...

Hello all,
thanks for your appreciation!

Charles:
Olympus CH-2 critical brightfield plus selfmade LED holder with possible shifting sidewards. Polarizator and retarder (Mica 1230nm) separately turnible for a wide color range. Achromat 6,3x.

Greetings Ernst

Hello,
M. = Trional was mentioned already by Agatha Christie as a sleeping drug. Ist crystals serve here better against the northern November Gray:



Ernst

Charles,
phantastic - thank you!!

Hi,
Nice and rather rare found! Campylodiscus sp. is correct. Typical is its movement, according to its saddle-like shape: juggling periodically without locomotion.
Regards
Ernst

Hallo Frank,
may you tell us which substance you have used for these phantastic pictures?
Regards Ernst

Great pictures!
If you could take the Daphia in polarized light, all the now white crystals would come in colors!
Greetings
Ernst

Marek,
phantastic!! This looks to me as if I were inside the preparat...
Greetings
Ernst

A "foil retarder" is a small piece of clear colorless plastic foil, placed between polarizer and condensor. It shifts the pol-colors to a higher order to make them more interesting. Check different material.

Ernst

Hi Barry,
please try it with a foil retarder, to make the different elements better to distinguish.

Ernst