Lovely circular diatoms. Experimenting with graduated backgrounds swapped out in post. Turned out to be quite pleasing. Not sure if doing so falls under the title of "excessive post processing". The diatom itself has minimal corrections of course, aside from focus stacking. I think for DIC, PMax produces better results. I would then run it through some kind of deconvolution sharpening and noise reduction since grittiness is produced.
Diatom here is a DMap.
And, here is a PMax.
Probably still depends on personal choice and subject matter. The PMax stack was very deep ~500 shots, whereas the DMap was 200.
Both 100x DIC.
More info here:
#1
https://flic.kr/p/2jZY4K9
#2
https://flic.kr/p/2k12rid