The lens is average in height, girth, and weight for the new crop of digital budget tele zooms, a surprising fact when you see its Pentax AF lens mount is metal, not plastic like Nikon's and Canon's. The barrel proper is a polycarbon hybrid, with a large, knurled-rubber zoom ring, and a much smaller focusing collar. The latter carries large, easily legible subject distance scales: feet in blue, meters in white. The zoom ring turns fluidly, not too loose or too stiff. The focusing ring's turn is somewhat underdamped and noisy, though not objectionably so. Similarly, the quiet AF action is clearly more audible than, say, Nikon's comparable 55-200mm with its Silent Wave Motor.