Quote Originally Posted by Daniel Browning
Of course, we have to make do with whatever scraps Canon gives us, so looking at the MTF charts is better than nothing.

So true, we have very little to base our decisions on as to whether it is a worthy upgrade. It seems the promise is there, whether it pans out or not will be seen later. With these lenses there will be far fewer copies than with most models, so getting information after their release may take a while.


Renting one for a few days would be an option to check out the differences, but I bet if your not on the list now to rent one it may be a long time after release before you get your hands on one.