Irix 11mm f/4 video review

Irix 11mm
Irix 11mm f/4 Firefly

The Irix 11mm f/4, manufactured by TH Swiss and not shipping yet, is a highly anticipated lens. Christopher Frost Photography posted a pretty informative, 10 minutes video-review of the Firefly version of the Irix 11mm f/4 (the other, more rugged one is Blackstone). He used a Canon EOS 6D and an EOS M3 to test the Irix 11mm f/4.


Irix 11mm f/4 specifications after the break

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Irix 15mm f/2.4 ultra-wide angle rectilinear lens lens announced

Irix 15mm F/2.4

The lens based on “Swiss precision and Korean innovation” is now official. It’s the Irix 15mm f/2.4. The lens looks pretty interesting according to the press release (after the video). An ultra-wide angle, rectilinear and manual focusing lens for full-frame DSLRs.

TH Swiss, the lens manufacturer, claims that in virtue of

sophisticated optical construction and special neutrino coating, colour aberration, ghosting and flare effects have been reduced to the absolute minimum, so the lens is ready to meet the requirements of the 50+ megapixel sensors of the newest cameras.

The Irix 15mm f/2.4 will be available in Spring 2016 (Canon, Nikon, Pentax mounts), no price tag has been announced so far. The short video below gives a good overview of the Irix 15mm f/2.4 features.

Press release:

Meet the Irix 15mm f/2.4. The photographers dream. Built by engineers and perfected by designers.

The new ultra wide-angle, rectilinear manual lens designed for DSLR cameras guarantees exceptional optical performance.

The Irix 15mm f/2.4 lens is designed to deliver the best optical performance and match full frame DSLR cameras demands. Providing a focal length of 15mm, this new lens model is ideal for outdoor and indoor photography whether it is photojournalism, landscapes or architecture.

From 19 to 22 March, during The Photography Show in Birmingham, TH Swiss will be premiering new family of lenses. Visit Irix at Stand No F121.

Innovative technology

Combining capabilities specific to analogue photography with ingenious technology and solutions, the Irix 15mm f/2.4 is the perfect tool for both professionals and hobbyists. The new special features such as focus lock, infinity click and hyperfocal scale set a new level of manual lens functionality. Focus lock enables to lock the focus ring at any time enssuring the chosen settings. Hyperfocal distance scale gives information about the accessible range for depth of field for a given aperture simply and intuitively. When the focusing ring is set in the “infinity” position, there is a noticeable “click” (infinity click), making it easier to find the value without looking.

Extraordinary optical performance

The Irix 15mm f/2.4 meets the most demanding requirements of modern cameras. Thanks to sophisticated optical construction and special neutrino coating, colour aberration, ghosting and flare effects have been reduced to the absolute minimum, so the lens is ready to meet the requirements of the 50+ megapixel sensors of the newest cameras.

The complex optical system consist of 15 elements in 11 groups. Three of the lens elements have a high refractive index and two others have been made from extra-low dispersion glass. The construction also contains two glass aspherical lenses that are responsible for extremely high image quality and improving image brightness at edges, while minimizing distortions and aberrations at the same time.

With a minimum focusing distance of 0.28 metre and 9 rounded shaped aperture blades, the lens stands for supremely smooth out-of-focus areas. Working with a narrow depth of field it allows the user to fully enjoy the bokeh effect.

Resistant to extreme conditions

Irix 15mm f/2.4 lenses are made with extreme precision, allowing them to be used in even the harshest weather conditions. Each lens is 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.

Irix 15mm f/2.4
Irix 15mm f/2.4

Prepare for more and create

Despite its short focal length and large aperture, the Irix 15mm f/2.4 is equipped with not only a front filter mount, but also has a rear gelatin filter slot. The design of the lens allows the use of 95 mm screw-in filters at the front in the petal-shape lens hood and gelatin filters at the back of the lens. This ensures unlimited possibilities for image creation.

Personalize your view

For the comfort of our customers Irix has created two versions of the Irix 15mm f/2.4 to meet their personality and individual taste.

Irix Blackstone: classic design meets maximum functionality, achieving the perfect match of innovative technology. The durable aluminium and magnesium body ensures foolproof protection of your lens, even in extreme conditions. Engraved fluorescent markings that reflect the light enable easy operation in all lighting conditions.

Irix Firefly: high quality mechanism in a handy design. Ergonomic focusing ring offers the freedom to capture the most ideal moment, whether it is big city architecture or wildlife scenery. The most lightweight lens in its class. Challenge accepted.

Irix Swiss Design

Irix Swiss Design stands for minimalism in style while maintaining maximum functionality. It is a perfect mixture of European design combined with Korean precision. The same look and feel of all products in the Irix family. The same consistency, product packaging and complementary elements, all perfectly shaped and fitting one another.

Ultimate precision

Each Irix 15mm f/2.4 lens leaving the factory has been properly calibrated. However, the focus calibration function provides the unique opportunity to adjust the focusing scale for a particular model of camera.

Technical data

Image size

35mm ”Full Frame”

Focal length


Field of View

1100 (diagonal)

Focusing range

0.28 m (0.92 ft) – ∞

Focusing type

manual with lock function

Aperture range

f/2.4 – f/22

Aperture control

via camera

Aperture shape

9 rounded blades

Lens construction

15 elements in 11 groups 3x HR, 2x ED, 2x ASP

Front filter thread

95 x 1.0 mm

Rear gelatin filter slot

30 x 30 mm

Available bayonet mounts

Canon EF, Nikon F, Pentax K

Dimensions (D x H)

114 x 100 mm (4.49” x 3.94”)




608 g (1.34 lbs)


581 g (1.28 lbs)



685 g (1.51 lbs)


653 g (1.44 lbs)

Pricing and availability: Spring 2016

About Irix

Irix. Designed with both the effort and experience, of not only engineers, but also photographers. Swiss precision and Korean innovation create patented solutions with the finest optical performance and usability.
Prepare for more at:

New lens manufacturer Irix teases “Swiss precision and Korean innovation”

Irix Lens

I got a mail from a lens manufacturer I didn’t here about before, Irix Lens. No hints were given, just the teaser image you can see above. Since they wrote to Canon Watch’s email address, I guess there will be a lens with Canon mount. They also have a Facebook page, but there isn’t much to find.

The teaser suggests an interesting aspect: Swiss precision and Korean innovation. What does it mean? Sounds like an engineering idea born in Korea and realised in Switzerland. Irix will announce and showcase their product(s) at The Photography Show in Birmingham, UK, on March 19. Any ideas?