Really brings distant wildlife up close. Birds in flight are fantastic.

Consistent Output; Fast / accurate auto-focus; Sharp; Strong Construction

No matter what if you are in the back row and your son on the stage at a school play, your picture will be prefect and it will look like you were in the front row.

This is a horrible way to spend your money!! I got this lense but for how much money you spend (a lot) you dont get much back, sure for a while you can zoom in really far and see things like you have never seen them from a camera before but after a while even that ends up getting messed up...

zooms in far

images (after lots and lots of use) can be distorted..

Really brings distant wildlife up close. Birds in flight are fantastic.

Consistent Output; Sharp; Strong Construction; Fast / accurate auto-focus

I have been using this lens for more than a month now. Its really exciting to see distant birds and wild animals so close thro' the image finder. AF is very fast.

Consistent Output; Durable; Easily Interchangeable; Fast / accurate auto-focus; Nice Bokeh; Rugged; Strong Construction

Heavy

What can I say, superb image quality with ultra long reach The ultimate wildlife lens, lighter than the 600mm and it fits (just) in my AW Rover bag so I can take it as hand luggage Add a 1.4x on a 1d body and you have autofocus (centre only) to an incredible 1456mmm equivalent Expensive but you know...

the pros of this lens are well documented in various on line reviews,all i will say is that its not cheap but its worth the money. you really do get what you pay for.its easy to manage thanks to its relative lightweight and it produces very sharp images for a super telephoto lens,F5.6 and F8 are the...

SUPERB LENS,VERY LIGHT,VERY SHARP AND EXQUISITE CONSTRUCTION

None really,F4 would be sweet but it would then weigh a tonne.