Irix Blackstone 11mm F/4
- Mount
- PENTAX K
- Focal Length
- 11mm
- Max Aperture
- F/4
- Type
- Wide
- Brand
- Irix
Irix Blackstone 11mm f/4 is an ultra-wide prime for Pentax K full-frame APS-C use, suited to landscape and architectural work. It’s a fixed focal length lens with a f/4 maximum aperture.
Last verified: 2026-04-27