I had a chance to shoot some birds on Cape Cod last week, and - surprise! - my old Sigma 70-300mm was just as crappy at bird shots as it was the last time I tried it. ;) So I decided to come home and just run down to B&H and buy the FA 300mm f/4.5. But now I can't find it on the website at all. It's not even listed as backordered; it's just not there. Does anyone know if this lens is being discontinued? And if it is, does anyone have one they'd like to sell me? :)
Failing that, can anyone recommend a good third-party lens? I just want a reasonably fast lens that I can hike with and that has some nice contrast. An f/4.5 would be fine. Does anyone know what the deal is with Pentax? There are a couple of other lenses I'm interested in that aren't available. Are they slowing down production or shifting everything over to consumer digicams? Amita

