You don't have to listen to me, (because obviously i (Funk Motorsport) sell the stuff, but with the "tint" or yellow shades very very little/no noticeable loss that I noticed when I applied it.
If there was a loss i couldn't put my finger on it. The smoke I cannot tell you as I haven't had a car with Smoked lights on at night. so cant help you.
Im sure "Digital Reaper" will confirm what I have said.