Buddy is playing a (small) show tonight, so i figured it would be a great time to try out my new (used) Tamron 28-75 2.8. I dont have a flash yet, so just the on board unit, although I'd rather not use that pointing at him while performing. Not sure about the stage lights. I figure I'll have to crank up the ISO. I'll bring my monopod to get some sessy DOF shots... but any tips?