I have some at f32, flip through the ones I've been uploading. Going too much past f16 you get serious diffraction problems.>>3183000
Rock with ink suspended in rubbing alcohol. Regular paint wouldn't have dense enough pigment to do that. Only stuff I have it maxed out on are tiny tiny baby mantises.>>3183002
It's been super useful. I make a lot of fake landscapes in studio and it the wide angle distortion can help initially sell the illusion.
This was taken with it >>3182990
and the one attached to this post. I do not use it to photograph insects.