» 11mm Photo lens (EN)

Irix 11mm f/4.0

  • Ultra-wide: 126 degree field of view
  • Full-Frame Lens (35mm format)
  • Low Distortion: 3% 
  • Superb weather-sealed construction
  • Fast f/4.0 aperture
  • Beautiful bokeh

Unbelievably Wide

producing otherworldy images

Canon EF,
Nikon F,
and Pentax K

Multiple Mounts

35mm Full Frame
Works with both FF
and APS-C Cameras

Full-Frame Lens

Only 3.14%

Low Distortion

Fully Weather-sealed,
ready for any conditions

Weather Sealed

Rear Gel Filter Slot allows for even more creative photography

Rear Gel Filter Slot

Available in Firefly
Blackstone version

2 Versions

This features “locks”
the lens’ focus ring
at any focus distance,
eliminating accidental focus pulls

Focus Lock

Lens is equipped with 9 rounded aperture blades to offer extraordinary image quality on the entire frame.

9 Aperture Blades

Focusing has never
been so fast,
easy, and precise.

Infinity click

PASM mode,
and data is recorded in EXIF.

Communication with

Comes with the lens, lens cap, and soft pouch or hard case.

Comes Fully-Equipped

Made to See More

Whether you’re a professional photographer looking for a lens for your next shoot, or an amateur 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, and comes in Nikon F, Canon EF, and Pentax K mounts. 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.

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!

A Build You Can Trust

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.

One Lens – Two Versions

The Irix 11mm f/4.0 comes in two verisons: Firefly and Blackstone.

Firefly – Lightweight composite construction, with an embossed rubber focus ring, allowing for smooth and precise focusing. Included with the lens is a soft pouch.

Blackstone – Reinforced full-metal construction. All lens markings are engraved and filled with a UV-reactive paint enabling easy focusing in dark enviornments. Included with the lens is a hard case.

Intelligent Lens Design

The Irix 11mm f/4.0 lens has a module that allows you to control the lens’ iris directly from the camera, thanks to which popular semi-automatic modes (PASM) and data recording in EXIF format are available.

The use of electronics also enable the lens to be equipped with a focus confirmation system – the camera will announce the correct focus setting (either in the form of an icon in the viewfinder or with a sound), every time you set the focus correctly – it’s easy and convenient!

It’s worth noting that Irix lenses have the appropriate correction profiles that are pre-loaded and readable by software (such as Adobe Lightroom and Adobe Photoshop), that will make your shooting experience even more enjoyable.

lense irix

Additional Features

Infinity click – Enables quick, easy, and precise focusing. During focusing, you’ll feel the moment when your lens hits infinity, which is extremely useful when shooting in difficult lighting conditions (I.e. at night).

Focus Lock – Allows you to lock the focusing ring in a specific position, which is extremely beneficial when you want to keep a specific focus plane, i.e. for astrophotography, or when using the hyperfocal scale.

Rear Gel Filter Slot – Allows the use of neutral gray filters, (a unique feature of the Irix 11mm f/4.0), against the background of competing ultra-wide-angle builds that do not have the option of using filters.

Focus Calibration Window – due to the specifics of focus detection in DSLR cameras (which are based on phase detection), sometimes it may happen that the lens needs synchronization with the camera. Thanks to this special window you can easily calibrate the lens at home using basic tools within 5 minutes. Fast, simple and effective!

Available mounts

The Irix 11mm f/4.0 is available in Canon EF, Nikon F, and Pentax K mounts.

Check out Irix Store now >


Image format

35mm „Full Frame”

Focal length




Field of view

126° (diagonal)

Focusing range

0.275 m (0.9 ft) – ∞

Focusing Type

Manual with lock function

Focus ring throw


Minimal focusing distance


Aperture range

f/4.0 – f/22

Aperture control

Via camera

Aperture shape

9 rounded blades

Lens construction

16 elements in 10 grups

Front filter thread


Rear gelatin filter slot

30 x 30 mm

Avalible mounts

Canon EF, Nikon F, Pentax K



Dimensions (width x length)

* (without accessories)



Canon EF

Firefly: 118x103mm

Blackstone: 118x103mm

Nikon F

Firefly: 118x103mm

Blackstone: 118x103mm

Pentax K

Firefly: 118x103mm

Blackstone: 118x103mm


Canon EF  

Firefly: 847 g

Blackstone: 877 g

Nikon F

Firefly: 808 g

Blackstone: 838 g

Pentax K

Firefly: 828 g

Blackstone: 868 g

Additional features

Focus lock


In 3 key areas





Included accesories






Front lens cap

1 piece

Rear lens cap

2 piece

Lens hood

1 piece

Soft Case (Firefly)

Hard Case (Blackstone)

1 piece


1 piece

Warranty card

1 piece



11mm difraction



11mm distortion



Opinions of our customers
4.71 based on 7 reviews

Why I Bought It:

I acquired this lens for my Canon 5D Mk IV entirely for my real estate photography, and I’m so glad I did. My go-to lens is a Tokina 17-35 f/4 ATX Pro, which is a great lens, but in some of these bathrooms, tiny bedrooms, and walk-in closets, even 17mm on a full frame just isn’t wide enough. I grappled with whether I should spend $500+ on a lens just to shoot bathrooms, and finally convinced myself that if I get 1 to 2 extra gigs because of it, it will pay for itself. My logic turned out to be solid. First shoot with it, and the client LOVED the shots I got with it. She didn’t think it would be possible to get these shots, so I wound up looking like a hero.

(1) This lens is sickly insanely wide. It’s so wide that looking through the OVF is almost disorienting. As I said above, I’m able to get shots that are otherwise impossible.
(2) Build quality is outstanding. It feels like a $3,000 lens. Way to go, Irix!
(3) Minimal barrel distortion, shockingly minimal for such a wide lens. What little BD there is gets eliminated in one click with the native lens correction profile in Lightroom.
(4) Tack sharp at f/10 from image center almost to the edges (I rarely shoot any real estate in anything other than f/10 so I can’t tell you about the rest of the aperture range).
(5) Great color and contrast, especially for such a wide lens.
(6) So much lens for the money
(7) Focus confirmation chip works flawlessly with my 5D Mk IV. Nailing manual focus is a snap. Also, note that this lens is manual focus, but it’s not a fully manual lens. Aperture is controlled from the camera, so you get live view (critical in real estate), and you’re wide open when looking through the OVF. Just like fully automatic lenses, the aperture blades are only stopped down when you fire.

(1) This lens does produce quite noticeable lateral chromatic aberrations. However (a) it’s unreasonable to expect otherwise on an 11mm full frame lens on a DSLR. Different frequencies of light get bent at different angles. When you stretch the field of view to 126 degrees as this lens does, those disparities inevitably produce purple fringing along color borders. These are the immutable laws of physics. I’m curious what this lens could do on a mirrorless camera with a shorter flange distance (this supposedly reduces LCA’s). (b) The LCA’s are easily correctible in Photoshop. Lightroom’s chromatic aberration removal tool is useless on any lens. I go into Photoshop and use the camera raw filter, and slide the purple CA removal tool all the way, and it gobbles the LCA’s right up without destroying any detail elsewhere. I know I spend more time defending this con than complaining about it, but in my heart of hearts, I feel that the LCA’s are entirely excusable here, especially considering what this lens succeeds at doing – grabbing a 126 degree field of view.
(2) It’s heavy. I got the Firefly version. I can only imaging how heavy the Blackstone version is. But really, so what? This isn’t a lens for taking on hikes. This is a specialty lens that real estate and architectural photogs will want to have in their bag along with lots of other heavy stuff.

Bottom Line: GET THIS LENS!

This review is from the Amazon store:
“The Irix 11mm lens produces professional level images. Ive owned 5 similar focal length lenses from both Sigma, Nikon, and Zeiss. This lens is by far the best. If the lens had Nikon or Zeiss badging, I would expect it to sell for $1200. Super wide lenses, by their nature, are more difficult to focus because they have extreme depth-of-field. They challenge auto exposure metering because they include an extremely wide field of view. These are not the lens fault, they are the way super wide lenses operate. If you are not familiar with such lenses youll need to learn how to use them”


This review is from the Amazon store:
“Very well constructed. Maintains Rectilinear image despite the great angle of view. Resolution is as advertised, very sharp! Seems to maintain sharpness throughout the field of view, corner to corner. CA is quite low, and any residual can be eliminated in post production. The only con is that the lens is quite bulky. Comes with case, and really fancy packaging, and a built – in lens shade. Canon would do well to provide the above, especially considering their prices!”


This review is from the Amazon store:
“This super wide lens is great for the price! Focus lock is very nice too. Highly recommended”


This review is from the Amazon store:
“I purchased this lens mostly to shoot buildings when the angle of coverage of the 14-24mm is not enough. Image quality is similar to the 14-24mm (some minor distortion in the borders included), aberrations are very easy to fix in Lightroom. Although its not listed in Lightroom, using the Canon profile for this lens works fine. The difference in coverage from 14mm to 11mm is quite substantial. Although this Firefly model is the plasticky weak version, I found it solid and with an excellent construction. You will need a very powerful reason to go for the more expensive and heavier metal model. Such a wide angle of coverage requires some practice to achieve the results you are looking for, perfectly leveled shooting is a must. Manual focus takes a bit to get used to but closed down to 5.6 or 8 gets a very deep depth of field making critical focus unnecessary. Some criticized the lens cover friction with the lens hood. After several months in use I couldnt find any mark or scratch because of this on the lens hood. Aside of any professional application, photographers in general will find the images produced by this lens very interesting. On top of all, this lens is very affordable and a worthwhile investment”


This review is from the Amazon store:
“Style:Firefly Mount:Nikon F
I was looking for an UWA lens for landscapes, sports & architecture. I don’t shoot wider than 18mm frequently, so I didn’t want to spend nearly $2,000 on the Nikon 14-24mm f/2.8. Just as I was agonizing over what lens to buy, IRIX had announced the 11mm f/4 Firefly and Blackstone versions. Since the optics are exactly the same in both and I wanted something lighter to carry, I went with the Firefly. The Good: 1.) This lens is SHARP even wide open at f/4. I spent a couple of hours comparing my SOOC results to other UWA lenses out there and concluded that this lens is as sharp at f/4 as some of the most expensive Nikon or Canon glass you’ll find. 2.) Being a rectilinear lens, it will render the scene with minimal distortion of lines. As long as it’s angled the right way, you don’t need to make any post-processing corrections. 3.) The Firefly version seems very well-built. It feels solid, smooth and hefty. It’s heavier than I thought it would be, even though this is the lighter build. The focusing ring is butter-smooth as long as you leave it unlocked. It has a locking ring that will either prevent you from accidentally changing the focus, or make it a little more difficult to move the focusing ring if you want more precision. 4.) It fits all my Nikon cameras perfectly. I’m using it with a D750, D610 and D500 and feel no movement when the lens is mounted. 5.) The lens comes packaged in a nice tin can, comes with a soft pouch, an extra rear lens cap and manual. Pretty neat! 6.) For an 11mm lens, the corners are actually quite usable, especially when stopped down to f/5.6 – f/10. Corner sharpness will depend on how close or far away you are to your subject. As can be expected, at f/4 the center is pin-sharp, but the corners fall off if you’re closer to what you’re shooting. That’s expected. 7.) When shooting into the sun, flaring is pretty well-controlled. 8.) According to IRIX, this lens is weather-sealed. I haven’t had any experience with that so far, but most lenses in this price range generally do not include weather-sealing. 9.) 11mm f/4 for under $600 with this IQ and build quality???? Wow! The Bad: 1.) My copy back-focused straight out of the box by a lot. I’m relying on Nikon’s viewfinder focus confirmation dot to be able to tell if my subject is in focus, so I had to AF-fine tune the lens before I was able to get optimal results. At first I thought a fine tune value of -10 would do it, but after a weekend of shooting, I was still unhappy with my results. I was beginning to think I got what I paid for. Despite the large DOF of an UWA, my subjects weren’t appearing as sharp as I hoped. I almost sent the lens back believing it’s alright for tripod work, but I intended to use it on moving subjects as well, and it didn’t seem to be working out for me. It took more than a week for me to figure out that the value actually needs to be set to -17 for perfect focus indication. Although it works great now, I’d love to be able to send it in and have it calibrated. Unfortunately it means I’d have to send it to Europe and wait weeks to get it back. This is part of the reason I wanted to take away half a point from my rating. 2.) My copy of the lens is underexposing pretty consistently by about 1 stop with all three cameras. It’s most noticeable when using highlight-weighed metering. I’m currently solving the problem by dialing in +1.0 exposure compensation, but wish I didn’t have to. 3.) There is some chromatic aberration in corners, but this is so easily fixed in Lightroom or Nikon’s Capture NX-D, that it’s not one bit worth worrying about. It’s no worse than any other UWA out there, even the very expensive ones. Unless you never process your RAW files and shoot JPEG, this is a complete non-issue. 4.) There is some minor vignetting, but once again, this is something that is easily fixed in post. I barely notice it. IRIX has developed a Lightroom profile for their lenses to address this. 5.) The cover for the lens is neat, but the mechanism that clips onto the hood is not covered in any fabric or rubber that would prevent it from scratching the outer surface of the hood when it moves around in a bag, for example. I think that small pieces of rubber would solve not only the slight movement of the cover, but also the potential danger of minor scuffs to the hood. Not a big deal, just something minor that could use a little improvement. Conclusion: The IRIX 11mm f/4 is an amazing lens when compared to what’s out there, not to mention for the price! Right now (2017) there really is nothing else like it out there. You’ll find lenses that are almost as wide, but not as sharp or as well-built, or they’re just as sharp, but contain a lot of distortion, and/or are much more expensive. Despite a couple of the more serious negatives I listed, with proper adjustments I’m getting optimal results. These issues could be unique to my particular copy and not necessarily a problem with others. I hope IRIX reads this and addresses the problem if it is more wide-spread. If you don’t mind manual focus and you need a rectilinear 11mm for architecture, landscapes or sports, in my opinion this is your best option for under $2,000.00. Nikon just released the 8-15mm fish eye lens which seems great, but if you don’t want that fish eye look, the IRIX is a wonderful alternative”


I have no doubt I would love this lens in blackstone or firefly form. I tested this lens to see if I would prefer the cine version for filmmaking (since it’s the exact same glass). My test resulted in sharp, ultra-low distorted images that I would love to have in my back pocket for vehicle interiors or wide landscapes. I used the lens on the Blackmagic Pocket 6k with an internal Magic Booster focal reducer which enables a nearly 1.1x crop factor. The lens had minuscule artifacting and chromatic aberration, much to my surprise. The most surprising thing that docks my review 1 star is the inability to change my f-stop. I realize the camera and the lens are considered third party to a degree, but after consulting Blackmagic they assured me that if there’s anything wrong with lens to camera communication, it’s on the lens side.

I think I would likely prefer the photo lens to the cine version were it not for this crucial factor. The cine version looks too dangerous to wield without a solid lens hood to hold onto and a lens cap that sits snug and secure. I would buy this lens and figure out how to fashion a focus ring to it, but I need that f-stop capability.

Irix seem to possess quality that you don’t find in many products. I wouldn’t be avert to renting their cine lenses when they’re available or promoting their stuff, because it really comes to snuff.

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Reviews & More
Pierpaolo Salvatore

"Irix 11mm f4 Firefly: Un Grandangolo Estremo per Scatti SpettacolariL'Irix 11mm f4 Firefly è un obiettivo grandangolare estremo progettato per fotocamere full frame. Questa lente si distingue per la sua capacità di catturare scene incredibilmente ampie, consentendo ai fotografi di includere una vasta gamma di elementi nella loro composizione. Personalmente credo che questo obiettivo sia una scelta eccezionale per la fotografia di paesaggi, poiché offre punti di vista alternativi rispetto ai grandangoli più tradizionali."


David Hancock

“Focus lock is a great tool!”
“… it makes for incredible images in the right settings and right subject”
“This pays off pretty well and delivers an image with excellent sharpness”
“Irix has excellent build quality”
“The Irix 11mm lens is something special!”



"En conclusion, c'est un très bon produit, avec une très bonne finition résistant aux chocs, à l'eau à la poussière donc c'est sympa pour l'emmener partout. .....
Très bonne qualité d'image à très bon rendu..... Je conseille fortement. "



"Irix 11mm F4的諸多特點中,我最喜歡其中三項設計,包括“無限遠對焦確認”、“ 對焦鎖定旋鈕”和“防滴防塵”,尤其前兩者更是幫了我很大的忙!"



Spanish review of Irix 11mm f/4.0 and 15mm f/2.4 lenses


Petri Puurunen

"Irix f/11 Firefly suprised me totally. First testshots taken on city (see samples) we truely awesome. Ultra wide perspective gives some much more."


Stan Timelapse Photographie

"L’Irix 11mm F/4 Firefly est un ultra grand angle hors norme. Au début son champ de vision est un peu déconcertant, mais je m’y suis rapidement habitué. Les possibilités qu’il offre sont énormes. Il m’a permis de faire des compositions que j’avais en tête depuis un moment. Le fait qu’il n’y ait quasiment aucune déformation, c’est fabuleux."


Miguel Mesquita Photography

"- Superb sharpness and contrast especially centrally;
- Wheatear resistance;
- Gorgeous sunstar effect;
- Excellent resistance to ghosting and flare;
- Very well controlled chromatic aberrations."



"- Dobra rozdzielczość w centrum kadru
- Wzorowa ergonomia
- Uszczelnienia
- Możliwość zablokowania pierścienia ostrości
- Pełna komunikacja z aparatem
- Możliwość mocowania filtrów żelowych
- Cena"


Karol Nienartowicz

"Oczywiście największą zaletą obiektywu jest ten szerooooki zakres widzenia, który tworzy niesamowitą dynamikę – ogniskowa 11mm naprawdę jest genialna. Dla mnie najistotniejsza okazała się ostrość, utrzymująca się niemal w całym kadrze."


Photography Life

"Creative and advanced photographers looking for new tools and perspectives may feel attracted to this lens though, so I would certainly recommend them to look into this offering from Irix."


Digital Camera World

"The Irix 11mm f/4 Blackstone is a well made and competitively priced ultrawide lens for full-frame Canon, Nikon and Pentax DSLRs. Image quality and handling are very good."



"It is very hard not to recommend this lens if you are looking for an ultra-wide rectilinear optic. The few other options in this class are much pricier and bulkier."


Ken Rockwell

"You can pay more, but you can't get a wider lens for an SLR or DSLR at any price. This 11mm is wider than any non-fisheye lens made by Sony or Nikon."



"Что касается картинки, выдаваемой объективом, то необходимо отметить очень хорошую резкость и геометрию. Причем резким снимок получается по всему полю кадра."


The Digital Picture

"If you do not have 11mm covered in your kit, it is time to think about plugging that gap. While this extreme-wide focal length is very useful, it is also very fun to use, inviting creativity.
This is a nicely-built and attractively-designed lens that is simple to use and delivers very nice image quality at a bargain price. This lens may be the ideal gift for a photographer who seems to have everything."


Blog Foto24

"El objetivo Irix 11mm es un objetivo sorprendente. Puesto que es un ultra gran angular sin deformación, con todo lo que ello conlleva. Tiene una definición y nitidez envidiable."


Foto Hits

"Das „Irix 11mm F4.0 Blackstone“ bietet sehr hohe Bildqualität zu einem angemessenen Preis und ist damit eine verlockende Lösung für Landschafts- und Architekturfotografen."


Photography Blog

"The Irix 11mm f/4 is an excellent ultra-wide-angle prime lens that delivers very good image quality. Sharpness in the centre of the frame is excellent throughout the aperture range, even wide open at f/4, as are the edges, with f/5.6-f/11 producing the best results."



"What an exciting lens the Irix 11mm f/4 Firefly is. It opens up a whole new world of creative possibilities in a well-made, well-designed package that delivers the image quality."