> A very silly design, slow and totally impractical. Optically it > was mediocre at best, and at most apertures and focal lengths > absolutely awful.
An alternative is the manual focus Tokina AT-X 150-500/5.6. Mechanically it is a very nicely operating one-touch zoom lens, very similar to the other one-touch AT-X zooms (100-300/4, 80-200/2.8, 60-120/2.8), except (of course) for size. Optically, it is a little soft above 300mm or so (as are some other long zooms), but otherwise is a commendable lens in just about any respect. Fred, K1FW
