Ok I have a 24-105. I think it's perfect for a walk around lens. 24-70 would be too short for me. Say 7 years from now mine is starting to wear out and I want to just get a brand new one, do you think they'll still be available even if Canon plans on replacing it with a 24-70 F4?
Do you think there is any chance they'll come out with a mk 2?