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Irix 11mm/4.0 Blackstone lens - Pentax K
High-quality super wide-angle lens
An extremely wide-angle direct-drawing lens, which, despite the wide focal length, distorts rarely. The Blackstone model has a metal frame coated with an anti-scratch coating and it is weatherproof. This high-quality lens is great for photographing the night sky, landscapes and architecture.
In stock
Data sheet
| Category | Lenses |
| Merkki | Irix |
| Model | 11mm f/4 Blackstone - Pentax K |
More info
Whether you’re a professional photographer looking for a lens for your next shoot, or an amature looking for to expand your lens set, this one’s for you. The Irix 11mm f/4.0 is an ultra-wide-angle lens created for your full frame (35mm) camera. It opens you to an entirely new world of photography– thanks to a 126 degree field of view, you’re able to capture incredibly captivating images, and excellent optics ensure sharp, detailed images.
Ready for Any Conditions
It doesn’t matter if you’re traversing the blistering Saharan dunes, or trekking across the frigid and desolate Antarctic – Irix lenses can handle any challenge.
Round rubber O-Rings seal and protect the lens from moisture, dust, and sand. The lens has an internal focusing mechanism, allowing the lens body to stay the same size and length througout its focus range.
The lens body is built strong, solid, and sturdy, ready to operate in all conditions.
Optics That Guarantee Sharp Images
Creativity, ideas, and the effort that’s put into the final image would be nothing without the right lens. Thanks to many years of experience in optical design, Irix lenses are characterized by their excellent resolution, minimal distortion (3.13%), and almost no vignetting. The Irix 11mm f/4.0 lens consists of 16 elements arranged in 10 groups: 4 refractive elements, 2 ED elements and 3 aspherical elements. The focus distance is only 28cm, which in combination with its f/4.0 f-stop and 9 rounded aperture blades, makes this lens stand out with extremely smooth bokeh from an incredible perspective.
You compose the image – Irix takes care of the rest!
TECHNICAL INFORMATION
Image format 35mm Full Frame
Focal length 11mm
Aperture f/4.0
Field of view 126° (diagonal)
Focusing range 0.275 m (0.9 ft) – ∞
Focusing Type Manual with lock function
Focus ring throw 140°
Minimal focusing distance 0.27m
Aperture range f/4.0 - f/22
Aperture control Via camera
Aperture shape 9 rounded blades
Lens construction 16 elements in 10 groups
Front filter thread No
Rear gelatin filter slot 30 x 30 mm
Mounts Pentax K
Dimensions 118x103mm
Weight 868 g
