Pentax SMC DA 50-135mm / f2.8 (IF) SDM Lens (telephoto zoom, waterproof) for Pentax (Electronics)
The Pentax SMC DA 50-135mm / F2.8 is the "small" Telezoom the DA * series. It is distinguished by a good light intensity, and the zoom is fully focussed inside - ie the lens is constant in length, regardless of whether the focal length is 50mm o
