Originally Posted by dcstep
I don't understand the question. That's one of the all time great lenses at a good price. If you've got a use for it, then buy it.
BTW, all the announced new lenses have been seriously delayed by the tsunami. A 135mm hasn't even been announced, so it'll likely be 2013 before anything new shows up. The new 500mm and 600mm lenses still aren't available after announcements in 2010.
The reason I ask is because the lens is just about 16 years old and is missing some features of the newer lenses (weather sealing, rounded aperture, newer lens coatings) and wasn't sure if I should wait for a replacement or just pick it up now.
So... Looks like I'll be picking it up! Thanks for your insights.