Mike I don't think anyone told Mary that a long lens would take care of blurring. I mentioned distortion and I think it would be tough to shoot a portrait figure without one in the size of studios we all seem to have.
Mary I learned on my last shoot that I am cropping the age group at 8 or 9 years old for shooting indoors. I am not going to invest in a elaborate lighting system, thus the little guys will blur, I don't think Mike was talking about shooting indoors with an ISO of 600.
I think you should price out what the lenses cost and see if it works in your budget. You'll use it, so it wouldn't be a waste. I don't put my shorter lens on much. I don't see a real difference in the "light" allowance for my lenses to make that determine a decision like yours.
It was lovely talking with you today. I love to hear a southern accent every now and then!
