This is a full film taken on Olympus body, PM-20 Exposure unit, on BH-2 Olympus Microscope - Kodak Max 400 film - Flexicolour C-41RA Processed at home (scroll to bottom for raw images)

In this film I am trying to figure out (whilst observing interesting things.. the main point) how different exposure times efefct the resultant photos.

I am also using polarising filters, and in some, getting a phase contrast effect by manipulating the filters - one of which is a lense from polarised sunnies I got from Temu :)

I have removed the dust from the scans, but nothing else - imperfections from the microscope are present - or not.. as the microscope gave them.

The microorganism is a Frontonia (identified by Fabian on the Amatuer Microscopy page - Thanks)

Frontonia - https://en.wikipedia.org/wiki/Frontonia

Frontonia is a genus of free-living unicellular ciliate protists, belonging to the order Peniculida. As Peniculids, the Frontonia are closely related to members of the genus Paramecium. However, whereas Paramecia are mainly bacterivores, Frontonia are capable of ingesting large prey such as diatoms, filamentous algae, testate amoebas,[1] and even, in some circumstances, members of their own species. In bacteria-rich saprobic conditions, Frontonia leucas can live as a facultative bacterivore.

Frontonia are widely dispersed, and members of the genus can be found in marine and freshwater environments on every continent.

Appearance and characteristics

Frontonia sp. Frontonia species vary in length from 50 to 600 micrometres. Cell bodies are typically ovoid or elongate, and somewhat flattened from back to front. They are flexible, uniformly ciliated, and usually surrounded by trichocysts. The small oral aperture is pear-shaped, and located in the anterior half of the cell.[7] Along the left side of the opening there are three membranelles, and the right has a single paroral membrane. The mouth is supported by inconspicuous microtubular rods (nematodesmata), and may expand during feeding to as much as two-thirds of the cell's length.

Ah, the sample is from a River in Narrandera - details:

'Dry' photos from the dry sample, 'wet' photos, from the almost dry riverbed.

The place is called Second Beach - by the locals.. nice for swimming when there is water in the river, and its warm.