Short Tele Macro. With a focal length equivalent to 71mm after sensor-crop factor, the 90mm f/2.8 gives you macro lens that’s capable of 1:2 reproduction.

Quick-Shift Focus System. Provides fast and accurate autofocus performance with Pentax’s Quick-Shift autofocus system for shifting from auto to manual focus for on-the-fly focus accuracy.

In-Lens Stabilizer. The 90mm f/2.8 is Pentax’s first optically-stabilized lens, providing up to 3.5 stops of correction.

High-Quality Build. The fully weather-sealed lens construction works with the 645D or 645Z’s weather-sealed body for maximum reliability in the field. Internal focusing and zoom further help prevent debris from penetrating the lens. Additionally, the SP lens coating protects the front element from dust and oils and makes it easier to clean.