Irix 11mm f/4 Pricing and Availability Announced

March 2, 2017 | Zoltan Arva-Toth | Lenses | Comment |

TH Swiss have officially announced the launch of the Irix 11mm f/4 lens. First unveiled at Photokina, the Irix 11mm f/4 is an extremely wide full frame rectalinear lens with an angle of view of 126°. It employs 4 high-refractive lens elements, 2 ED lenses and 3 aspherical elements to guarantee very low distortion, as low as 3.13%, which makes Irix 11mm f/4.0 lens unique in its class. The special Blackstone version of the lens has engraved UV light reactive markings enable easy operation in low light conditions to facilitate the perfect photo. The Irix 11mm f/4.0 will be available to buy during The Photography Show in Birmingham (18-21 March 2017) priced at €635 (Firefly edition) / €865 (Blackstone version).

Press Release

Widen your point of view with the new Irix 11mm f/4 lens!

TH Swiss company is pleased to announce the official launch of the new model of Irix lens 11mm f/4. It is another ultra wide-angle rectilinear manual focus lens designed for DSLR cameras. But this time... it's even wider!

Ingenious functionality od Irix 11mm f/4

To the family of Irix lenses joins a lens with focal length of 11mm and aperture f/4. After Irix 15mm f/2.4, Irix 11mm inherited the same, tested and appreciated technological solutions such as: extra handy focus lock mechanism, extremely useful infinity click feature and very intuitive and user-friendly hyperfocal scale. Rear gelatin filter slot is another common feature of new Irix 11mm f/4.

Firefly and Blackstone versions

Just like in Irix 15mm, this lens is oferred in two finishing versions. Firefly as a standard version is made of lightweight composite, provided with anti slip rubber coating ring and clearly printed markings. There will be also a premium version available, which is Blackstone with durable aluminium and magnesium body that ensures foolproof protection of your lens. Blackstone's engraved fluorescent markings reflect the UV light to enable easy operation in low-light conditions.

Describing the product packaging, Firefly version will be offered in a set with soft lens pouch, while Blackstone version will be secured in hard lens case. It is also worth mentioning that as with Irix15mm, the user gets an additional rear cap in package.

Resistance to extreme weather

All Irix lenses can be used in even the harshest weather conditions. Both versions of 11mm are equipped with a weather sealed construction that protects the interior against dust and moisture. Thanks to inner seals they are also protected from accidental water splashes – two seals are around focus ring and one seal on bayonet mount.

Widen your point of view

As well Blackstone as Firefly versions are offered with identic mechanical and optic construction.

They offer minimal barell distortion of 3,13% and astonishing diagonal angle of view of 126 degrees. Combining these two qualities together makes that lens an ideal tool for both outdoor and indoor photography - whether it is photojournalism, landscapes or architecture. Encompassing capabilities specific to analogue photography with ingenious technology and solutions, Irix 11mm f/4 is perfect equipment for both professionals and hobbyists.

Technical data:

Image size

35mm ”Full Frame”

Focal length


Field of View

126⁰ (diagonal)

Focusing range

0.28 m (0.92 ft) - ∞

Focusing type

manual with lock function

Aperture range

f/4.0 – f/22

Aperture control

via camera

Aperture shape

9 rounded blades

Lens construction

16 elements in 10 groups

(4x HR, 3x ASP, 2x ED)

Front filter thread


Rear gelatin filter slot

30 x 30 mm

Available bayonet mounts

Canon EF, Nikon F, Pentax K

Recommended retail prices are:

635 EUR (tax incl) / 575 USD (net) for Irix Firefly

865 EUR (tax incl) / 775 USD (net) for Irix Blackstone

Both versions will be available with Canon EF and Nikon F mounts. The Pentax K-mount version will be released later.

Irix 11mm f/4 availability

The TH Swiss will be officially premiering 11mm lens from March 18th to 21st, during The Photography Show in Birmingham there will be a possibility to buy the first copies. All interested are invited to visit Irix at Stand No C31. Worldwide sale will start off after the exhibition.

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