Someone was just commenting on PF that they were thinking of leaving Pentax because they needed "longer and faster lenses" for birding.
Well, there you go! You won't find "longer and faster" in any line.... The issue then becomes buying a truck to haul it around and getting it slung over your shoulder for a hike into the woods.
Dimensions (Diameter x Length) 236.5 x 726 mm So, nearly
10" diameter by 29" in length.
Weight 15700g So, nearly
35 pounds.
And, on top of it all, it comes with a 2X autofocus teleconverter!
I don't know why we don't all have one. We could do portrait shots from the next county over.
DP write-up Juza write-up - some test shots, links to other sources Amazon Reviews lots of laughs