trade a 24-70 for a 24-105 ??
Is the addition of IS (I can't hold a camera still for squat anymore) worth the reduction from 2.8 to 4?
I shoot outdoors far more than inside and I usually stop down a bit to increase sharpness. So, I'm thinking I won't miss the f/2.8. How much does the 24-105 f/4 have to be stopped down to increase sharpness.