Designed for up to 8K cine-style image capture and covering up to full-frame size sensors, the black Leica L-mount IRIX 11mm T4.3 Cine Lens L-Mount Blackfrom IRIX incorporates multiple internal and external design features. This 11mm lens will produce a classic wide-angle look or up to a 123° viewing angle in the 2.39:1 widescreen format, depending on your camera's sensor. External features include a 95mm front diameter, 0.8 MOD gears, luminous focus marks in feet, and a detachable 1/4"-20 support foot.

Internally, nine blades produce smooth, rounded bokeh for natural-looking out-of-focus highlights. To help eliminate aberrations and distortion, the IRIX 11mm T4.3 Cine Lens is constructed with 16 optical elements in 10 groups, including four HRI (high refractive index) and two ED (extra-low dispersion) elements. A Multi-Start Thread focusing mechanism delivers quiet, precise focusing even in wet or humid conditions or in extreme temperatures. This lens has 180° of focus, 75° of iris rotation, and an 86mm front filter thread, and it includes front and rear caps. Four seals protect against inclement weather and dust.

Covers Full-Frame Sensor Size    43.3mm Image Circle, Leica L--Mount    Aperture Range: T4.3 to T22    Luminous Focus Marks in Feet    95mm Front Diameter    Rounded Aperture Blades    180° Focus / 75° Iris Rotation    4 x Seals for Weather Resistance

The IRIX Cine 11mm is a wide 43.3mm full-frame lens that uses 16 optical elements, including four high refractive index (HRI) and two extra low-dispersion glass (ED) elements, to create crisp cinematic shots in resolutions up to 8K while keeping the focus breathing at a minimum. This lens features a relatively fast T4.3 maximum aperture and can be stopped down to T22.

Related Questions and Answers

Q: 1. is it compatible with Blackmagic Pocket Cinema 6K Pro?

A: Yes, IRIX 11mm f/4 Firefly Lens for Canon EF is compatible with Blackmagic Design Pocket Cinema Camera 6K Pro. Both products are desing with Canon EF mount.

Q: 2. What is the difference between Firefly lens vs Blackstone lens?

A: Irix 11mm f/4 Firefly and Blackstone share the same specifications. The difference is in the build quality. The blackstone is stronger made of durable aluminum and magnesium alloy. The firefly lens is made of a lightweight ABS plastic exterior construction.

Q: 3. Can we get ND filter for this lense ?

A: Yes, But a adapters are needed. Please look into the following item. Cokin Universal X-Pro Series Filter Holder Adapter Ring https://bhpho.to/37clouY Cokin X-Pro Series Filter Holder https://bhpho.to/3C9fTLZ

Q: 4. Does this lens work on the FTZ adapter for Nikon Z cameras?

A: The IRIX 11mm f/4 Firefly Lens for Nikon F is a manual focus and exposure lens that is compatible with Nikon Z cameras with the FTZ adapter.

Q: 5. What is the difference between the FireFly and Blackstone iterations of this lens? What do you get with the extra money for the Blackstone? Thank you!

A: The Blackstone has a metal body and engraved numbers. The Blackstone is heavier as well. Optically they are the same.

Q: 6. Why no Nikon F mount then it could be adapted to more than one camera!?

A: I am sorry to say we are not aware of the reason why IRIX does not make this lens with a Nikon F mount.

Q: 7. Is this compatible with any clamp on matte boxes or does the front piece protrude too much?

A: The IRIX 11mm T4.3 Cine Lens (Canon EF, Meters) doesn't have filter threads so there wouldn't be a way to get the adapters of the clamp on matte boxes on to the lens.

Q: 8. Can anyone tell me how to read/use the hyperfocal scale on this lens? I know what hyperfocal focus is and on most other lenses I know how to use it, but the scale on this lens is truly perplexing to me - specifically, why are there multiple aperture values on both the left and right sides of the centre mark? And there's also another hyperfocal marker above the distances as you approach the infinity mark. So far I've only been able to test it visually by taking the same photo at different focus values and comparing them on my computer to see which are the most in-focus. This is by no means a very technical approach to achieving the proper focus, so I'm very interested in learning how to properly use the hyperfocal scale on this lens. Thanks in advance for any information anyone can provide!

A: The aperture scales on the left and right of the focus mark indicate the approximate distances from the focal plane of the camera within which the image will be acceptable sharp at the current focus setting. It's referred to as a depth of field scale. The hyperfocal scale allows you to set your focus to the approximate hyperfocal distance for your current aperture, by aligning the f/number on the scale with the center focus mark. Irix has a good article on their site explaining DoF, hyperfocal distance and how to use both scales.

Q: 9. What mm size UV protective filter fits this Irix 11mm Blackstone Lens?

A: Due the shape of the front element on the IRIX 11mm f/4 Blackstone Lens for Canon EF, it doesn't accept screw in UV protective filters.

Q: 10. Will this work on the BMPCC4K with a Metabones Speedbooster (MFT to EF) ? Will there be vignetting?

A: Both the 0.71 and the 0.64 Metabones Speedbooster, show little to no vignetting.