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Irix Blackstone 11mm F/4 Lens
For Pentax K Mount

Weatherproof - Seals protect from dust, humidity and light splashing.Weatherproof - Seals protect from dust, humidity and light splashing.Fixed focal-length. No zoom.Fixed focal-length. No zoom.Rectilinear are normal lenses that show straight lines as straight lines.Rectilinear are normal lenses that show straight lines as straight lines.No thread to mount front filters.No thread to mount front filters.Manual Focus Only lens.Manual Focus Only lens.

Lens Description

The Irix Blackstone 11mm F/4 is an ultra-wide prime designed for cameras with a Full-Frame sensor. This prime has a 11mm focal-length. The body of this lens is weatherproof against adverse weather such as rain and snow. It has sealing to prevent entry of water and dust.

This prime can focus down to 27.5cm from the imaging plane which gives it a maximum magnification of 0.07X. The lens is not capable of autofocus and so the focus-distance must always be manually adjusted via the focus-ring.

This version has a Pentax K lens mount. Follow this link for all current compatible digital cameras: Pentax K mount cameras with Full-Frame or smaller sensors. Irix also made this lens available for Canon EF, Nikon F mounts.

Irix Blackstone 11mm F/4

Irix Blackstone 11mm F/4 Specifications

Brand Irix Model Blackstone 11mm F/4
Mount Max FLM 1X
Focal Length 11mm View Angle 126°
Max ApertureF/4Min ApertureF/22
Min Focus27.5cmMagnification0.07X
Filter Size Aperture Blades9
Size (D x L)118 x 103mm Weight790g
TiltN / A ShiftN / A
Stabilization ProtectionWeatherproof
Zoom Drive Mechanic Focus Drive Manual Focus only
Zoom Mechanism N / A Focus Mechanism Internal
Hood Fixed Focus Motor N / A
Perspective RectilinearIntroduced2017-03-02
Features

Rear 30x30mm Gelatin Filter Slot. UV Reactive Markings.

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Irix 11mm F/4 Facts


Weatherproof - Seals protect from dust, humidity and light splashing.Weatherproof - Seals protect from dust, humidity and light splashing.Fixed focal-length. No zoom.Fixed focal-length. No zoom.Rectilinear are normal lenses that show straight lines as straight lines.Rectilinear are normal lenses that show straight lines as straight lines.No thread to mount front filters.No thread to mount front filters.Manual Focus Only lens.Manual Focus Only lens.
11mm Focal-Length F/4 Constant Aperture
No filter thread Manual Focus only
Pentax K Mount 1 Max Crop-Factor
790g Lens Weight 118 x 103mm (D x L)
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