Full-frame telephoto zoom lens for Pentax K-mount cameras with weather resistance.
The Pentax HD D FA 70-210mm f/4 ED SDM WR is a professional constant-aperture telephoto zoom for Pentax full-frame (D FA = Digital Full-frame and film compatible) cameras, featuring HD (High Definition) coating, ED glass, SDM (Supersonic Drive Motor) AF, and WR weather resistance. A full-frame-covering telephoto zoom in Pentax's professional D FA range.
70–210mm zoom range, f/4 constant maximum aperture, HD coating, ED glass, SDM AF motor, WR weather resistance, Pentax K bayonet mount, full-frame coverage.
The HD D FA 70-210mm f/4 is a premium telephoto zoom for Pentax full-frame (K-1, K-1 Mark II) cameras, offering constant f/4 brightness with ED glass chromatic aberration control and SDM quiet AF. The WR construction pairs well with Pentax's weather-resistant K-1 bodies for outdoor photography.
Test SDM AF accuracy and speed. Check HD coating for condition. Inspect ED elements throughout zoom range. Confirm WR seals are intact. Test at 70mm and 210mm extremes. Confirm K-mount engagement.