I've decided to got with the 150mm because it is in between the 105 and 180. I have a 50mm, 28-120mm, and a 300mm. There is a macro function on the 300, but closest distance is 6 feet. I use the 28-120 95% of the time. Like Chris said, I can always crop to get just a little closer in. Thank you again for all of your help. Next, I'll work on getting a speedlight. There is really only a choice of 2 that I like. Derek