優點:
I changed my 70-200 4L to this lens.
It has sharp image even at F4, (if at F8, it is super super sharp).
The color is quite good.
Very useful for 300mm.
Very fast focusing and HSM (same like USM, can manual focus at AF mode)
with free tripod mount
缺點:
Heavy and Big
No more this range (F4) for Canon (forget about EF100-300, F4.5-5.6 and 70-300 F4.5-5.6. It is totally not this class)
評價:
Super Lens, I used it for dragon boat and lotus shooting. The quality can compare with my 70-200 4L and more useful for its 300mm with reasonable price.
It is a good choice if you cannot afford EF100-400 IS L and 70-300 D