as a general rule, the higher the f-stop #, the smaller the opening...so a higher number f16, 22 would be probably be closer to a small pupil f2, 3, 4: night Also though a higher f-stop gives you more depth of field in the picture all by itself. But I could ask over in the photography forum if that doesn't work/make sense/etc

This is the captain. We have a little problem with our entry sequence, so we may experience some slight turbulence and then... explode.