Pentax's premium full-frame standard zoom — constant f/2.8 with weather sealing for K-mount.
The Pentax HD D FA 24-70mm f/2.8 ED SDM WR is Pentax's professional constant f/2.8 standard zoom for full-frame K-mount bodies. HD coating, SDM motor, and all-weather (WR) construction make it the reference standard zoom for the K-1.
Optically very good — HD coating provides excellent contrast. Constant f/2.8 throughout. SDM motor for quieter, faster AF than body-driven alternatives. ED glass controls chromatic aberration. WR weather-resistant sealing for outdoor use.
Pentax K mount with 82mm filter thread. Approximately 787g. WR weather-resistant construction. SDM motor. HD coating. Quick-shift Focus System. Full-frame coverage for K-1 series. Minimum focus distance 33cm.
Available used at professional prices. The only Pentax-native full-frame constant f/2.8 standard zoom. Essential for K-1 professionals. The SDM motor had reliability issues on some earlier Pentax lenses — check operation. For serious Pentax K-mount photographers.