Maybe I do not know how to read charts, but is the chart on this one telling us that is going to have the best IQ of any Canon lens so far?
www.usa.canon.com/.../ef_500mm_f_4l_is_ii_usm
The 500mm Looses 1.47 lbs. It is .1" smaller in diameter and .1" shorter.
The 600mm looses 3.15 lbs and wieghs close to what the old 500mm did. It is .1" smaller in diameter and .5" shorter.
