In everything but value it is a perfect 10, not many people are able to afford it, and i am very fortunate to have use of this lens, but honestly you will not be getting this lens unless you know every detail about the lens, so this review is just reiterating points.

Produces pro looking photos, crisp and sharp. Auto-focus works smoothly, quick, and quietly.

The heaviness is expected, but design wise, it has option for manual focus and A/M where manual overrides auto where you physically try to focus with lens. Smooth lens.

Well i did not pay for this lens but i doubt anyone on here will be as well. It is between $2000-$2500, so starts saving your money. But if you are serious enough this lens will bring in the big shots.

Smooth, haven't tested dropping it yet, always keep lens hood or filter to protect the lens though-just follow that and it may just save your lens one day.

Very high quality lens, pretty much as top of the line as glass gets.