Irix 150mm f/2.8 Macro 1:1 Lens for Pentax K

The Irix 150mm f/2.8 Macro 1:1 for Pentax K is a full-frame macro lens built for true 1:1 magnification as well as narrow-field portrait and advertising work, where a 150mm focal length is a useful compromise over shorter macro lenses. Its weather-sealed Dragonfly housing and internal focusing are aimed at photographers shooting both macro and portrait work in the field.

• Native Pentax K Mount: Full-frame (35mm) coverage designed specifically for this mount.
• True 1:1 Macro Magnification: Increases to 1.5:1 on an APS-C sensor due to the crop factor.
• 11 Rounded Aperture Blades: Produces smooth, soft bokeh at f/2.8 while minimizing diffraction when stopped down.
• Internal Focusing System: The lens doesn't change physical size while focusing, keeping the body solid and stable.
• Weather-Sealed Dragonfly Housing: Metal-reinforced construction with a scratch-resistant finish and UV-reactive engraved markings.
• Electronic Iris Control from the Camera: Supports PASM modes, EXIF data recording, and in-viewfinder focus confirmation.
• Arca-Swiss Tripod Clamp and Focus Lock Ring: Stabilizes the setup and locks a chosen magnification ratio in place for macro work.
• 77mm Filter Thread: Also compatible with square filters via the Irix Edge IFH-100-PRO filter holder.