First of four planned tests - CFI PA 20/0,75 objective.
The same DIC settings everywhere, no processing.
Full frames:

1:1 crops.

Last months I used L+PF40 slider combination and it works great for the PA 20 objective; that pair worked better than M+PF20 or M+PF40.
PF 20x, PF 40x and PA 40x to go.