Upload & Sell: On
That's right Alan.
Although, it doesn't cover the near/far angular velocity thing. Actually, it's more like angular displacement over time, but nobody seems to care about the math. Just wait 'till we get into the physics...
P.S. Tim, this 'extra' stuff discussion must cover at least the added cost for IS. Have you thought about Extenders...?
No I hadn't thought about extenders but I do own a calculator just in case my mental math skills can't keep up with FL x 1.6 x 1.4, or x 2.
I'm just a guy that would like to get a lens that lets me take the mental image I witnessed home with me on a data card for later review and possible sharing with friends and relatives.
I've pretty much decided based on what I read here that IS will have a real value to me as much of the time I will be using the lens will be on the early or later ends of the day and getting all the potentially available light gathered might need some assistance?
I've also decided that I will probably purchase a used lens. My girlfriend's impending car trouble has convinced me that my tax refund might not be as generous as I previously assumed?
Carry on as you see fit!