IRIX 11mm f/4 Blackstone Lens for Pentax K IL-11BS-PK B&H Photo
IRIX 11mm f/4 Blackstone Lens for Pentax K IL-11BS-PK B&H Photo
Irix 11mm f/4.0 Blackstone Wide Angle lens Pentax
IRIX 11mm f/4 Blackstone Manual Focus Full Frame Lens for Pentax K-Mount {Rear Gel} at KEH Camera
11mm - Irix lenses were designed with both the effort and experience, of not only engineers, but also photographers. Swiss precision and Korean innovation create
Irix 11mm f/4 Blackstone review | Digital Camera World