Early testing, just getting a feel for settings.
If you dial the aperture all the way open the DOF is incredibly small. But the images look great.
(the range is f/14 to 40 lol. This is not a fast lens)
Focusing it is a little tricky because it's hard to hold it still. I think you probably want a tripod for best results even though I was using like 1/160 to 1/320 sec exposures, because your DOF can be sub-mm at the smaller apertures and is only a couple of mm at the larger.
The ring light produces visible reflections on shiny surfaces when imaging at near-normal incidence angles vs off to one side, but I'm not sure how viable polarizing at this dimensional scale would be. You would need a very very small polarizer.
@azonenberg I don't think you're close enough to Brewster's angle for polarization to help much even on the nonmetallic surfaces?
