Irix 11mm f/4.0 : Specifications and Opinions

The Irix 11mm f/4.0 is a wide-angle lens for FF and APS-C, manufactured from 2017. The focus is done by Manual Focus, it does not have image stabilization. The average price, when it has been added to the JuzaPhoto database, is 347 €;

15 users have given it an average vote of 8.7 out of 10.

MOUNT

This lens is available with the following mounts:

Canon EF: this lens is compatible with reflex fullframe and APS-C Canon EF.

Nikon F: this lens is compatible with reflex fullframe and APS-C Nikon.

Specifications
Focal lenght	11 mm
Angle of view	126.1°
Format	FF, APS-C
Max. aperture	f/4
Aperture blades	9
Lenses/Groups	16 elements in 10 groups
Min. focus distance	0.27 meters
Reproduction ratio	0.07x
Features
Stabilization	No
Focus	Manual Focus
Internal Focus	No
Built and notes
Tripod ring	No
Extenders	No
Filters
Lens hood	Built-in
Weather sealing	Yes
Weight	790 g
Dimensions	118 x 103 mm
Buy
Irix 11mm f/4.0, buy on Ebay JuzaPhoto contains affiliate links from Amazon and Ebay and JuzaPhoto earn a commission in case of purchase through affiliate links.

Publish your advertisement on JuzaPhoto (info)

Reviews

What do you think?

Do you want add your opinion? You do it by joining JuzaPhoto, it is easy and free!

There is more: by registering you can create your personal page, publish photos, receive comments, join discussions and you can use all the features of JuzaPhoto. With more than 260000 members, there is space for everyone, from the beginner to the professional.

The following opinions have been automatically translated with Google Translate.

Alessandro Piana

sent on 29 Aprile 2026

Pros: Build quality, adjustable focus friction, weather sealing, sharpness, color rendering

Cons: Vignetting, flare, distortion not very easy to manage

Opinion: I have been using this lens for a few years now for interior photography. The extremely wide angle of view is a crucial feature and allows easy shooting of spaces, not possible with "standard" lenses such as 14 or 16mm. Sharpness is very good on reflex bodies; on the Nikon D810, for example, it is more than satisfactory. Finally, the most recent adaptation on the mirrorless turned out to be a surprise beyond the best expectations. On the Nikon Z5 II, for example, I found a high increase in sharpness and no errors in focus. Priceless... The only features to look out for, as with all ultra-wide-angle lenses, are distortion and vignetting. Adobe has incorporated the profile of this optician into its database, so they are easily checkable; however, sometimes you need to act manually against the autocorrect values. Obviously, the control of lines and perspectives during the shooting phase contributes a lot, so it is a good idea to pay some attention when shooting. The only downside is a certain amount of flare in particular lighting conditions, for which it is preferable to pay some attention. Net of all possible considerations, it is important to know that such extreme objectives require conscious and shrewd management. Having said that, my final judgment is extremely positive (9).

Stefano Roldo

sent on 12 Settembre 2025

Pros: Material quality, tropicalization, focus adjustment and locking, distance calibration, "infinity click", hyperfocal distance scale, wide focus range.

Cons: It is not stabilized, lack of autofocus ? Forget the star effect on point lights even with smaller apertures.

Opinion: Happy owner of the excellent Tamron 15-30 G1, I needed to have a greater angle of view for interior/architectural photos. After the usual searches on the net with conflicting opinions, I chose the "Blackstone" version for better quality control. I'm testing it these days on d850 body and I'm fully satisfied with the performance in general. Considering the width of the angle of view, I'm not experiencing major problems with chromatic and optical aberrations (easily corrected). Sharpness is very good in the center and slightly soft at full aperture corners (f/4) improves noticeably with intermediate apertures. Possibility of using gelatin filters (taken at a ridiculous price but I have not used them yet). Purchased directly on the IRIX website and discounted by 50%, I believe that the value for money is very advantageous. This ultra-wide-angle and linear focal length on FF gives the possibility to incredible new photographic ideas. I found in some of my photos a poor sharpness at the edges due to my non-perpendicularity in the shooting and not for the optics. It is not an easy lens to use. Personally I highly recommend it.

Mikobo

sent on 15 Giugno 2023

Pros: Width of field, excellent sharpness in the center and little distortion, aberrations and distortions correctable without major problems, value for money.

Cons: Bulky, heavy, mounts rear filters and only of the manufacturer, suffers from flare

Opinion: I took the Blackstone version, although heavy to carry can not miss in my bag. With its 11 mm wide angle and not fisheye allows you to take home the shot even in special situations. The fact of being a manual lens is an advantage in night photos where set to infinity (which is feasible even in the dark as the ring takes a shot when it arrives at the exact point) without "wasting" time with the autofocus. It has often happened to me where to shoot on the fly and maybe with another perspective I would have lost the moment. Excellent value for money, it is definitely not the lens I use most but I am fully satisfied. A flaw that creates some problems in the post are the flares still below the average of the competitors. I read about many who have had problems with sharpness, it seems that he was lucky. The lens also has an adjustment screw but at the moment it looks perfect like this.

Fabio Cammalleri

sent on 26 Novembre 2021

Pros: It is the only 10-11mm option for Pentax full-frame. Distortion correction profile present in Camera Raw.

Cons: Magenta/heavy purple chromatic aberration. Poor contrast.

Opinion: Purchased new for € 490 in the "light" version, "Firefly", it is the only real 10-11mm lens (not fisheye), existing for Pentax K-1, so having no other choice I took it because I do a lot of architectural photography, both interiors and buildings. I first obviously checked the presence of the distortion correction profile in "Camera Raw" which in my case, is indispensable and then I ordered it. Arrived yesterday I immediately did my tests and for distortion there is to say good that even with the correction disabled is very controlled, only that this is smoke in the eyes, precisely because for the kind of photography I do where the detail counts to the hundredth, the presence of strong chromatic aberration purple / magenta is a very serious defect and exceeds any potential value. I made a comparison one by one with the Samyang 14mm f2.8 in my possession doing both the 1/1 crop test then cropping the frame from 11mm up to 14mm and the classic one on the whole frame. Here, in Samyang the chromatic aberration without correction is just present at 98% and vanishes by 99.9% with the correction profile. In this Irix the presence of Purple / Magenta in the edges of the objects against the light already at 2/3 of a frame is 95-96% (in the edges) and drops very badly perhaps up to 98% of the contour in the backlight, remaining however too visible for the kind of work I do unless I reduce the resolution of the photograph from 36mpx to 10mpx or less. Another rather negative side is the original contrast of the photo in raw. I do not know how to say that it is sharp and contrasted, since both the 14mm Samyang and the 20mm are in comparison lenses that seem to explode details and colors. From this Irix the colors come out washed out and the contrast does not live up to the sensor of the K-1 ... Having said that maybe I keep it ... because I have no other choice, but having to resort every time to a very heavy post production to revive its characteristics and try with some miracle to make the purple / magenta fringes disappear. If you don't have the Pentax K-1, take something else because it's a barely decent lens. Rating 6.5.

Albertoscaccia

sent on 05 Gennaio 2019

Pros: well built, sharp enough even at f4

Cons: size and weight

Opinion: I have the firefly version in plastic, but it is not as poor as you might think, indeed the lens looks very solid and anything but light. Paired with the K1 they make a nice weight to wag around, I would have preferred one less diaphragm but a handling similar to the Voigtlander 10mm f/5.6 for example. The filters, as has already been said, fit from behind and are only available ND (3X3 cm, at a paltry cost), inserting filters is easy and intuitive while to remove them you need to use another filter to pry. I consider this Irix a very good and fun goal; it makes a lot of stuff in the frame and it gets more and more appreciated every time I use it, I'd buy it back.

There are 3 more reviews. Show all »

Photos taken with Irix 11mm f/4.0

Basilica of Sant'Ambrogio

by Fabio Cammalleri
59 comments, 6024 views

Tre Cime di Lavaredo Cave 1 - 15 July 2023

by Fabio Cammalleri
16 comments, 2965 views [editors pick]

Ravello

by Lo_straniero
14 comments, 7525 views

Big Brother

by Canopo70
30 comments, 2053 views

Colors

by Canopo70
28 comments, 1860 views

Rome Square

by Wonderpig58
110 comments, 3434 views

City Life

by Canopo70
20 comments, 1430 views

Publish your advertisement on JuzaPhoto (info)

The Big Eye

by Canopo70
26 comments, 2873 views

6 seconds of love

by Lo_straniero
10 comments, 4933 views

The Wave, 8 years later

by Bass3d
15 comments, 1253 views

Blue hour

by Wonderpig58
134 comments, 2908 views

Heavens Gate

by Riccardomantero
13 comments, 1623 views

The quiet after the storm

by Lo_straniero
13 comments, 4298 views

Tropical Storm

by Riccardomantero
0 comments, 1597 views

Albinism

by Riccardomantero
8 comments, 1517 views

Tree the slowest explosion of a seed.

by Lo_straniero
7 comments, 3245 views

Arc of Peace

by Lorenzo Penna
2 comments, 1430 views

Siena

by David Fotoimpronte
0 comments, 1688 views

Wind

by Riccardomantero
0 comments, 1546 views

Speces, 19

by Canopo70
8 comments, 936 views

Certaldo

by Lorenzo Penna
5 comments, 1365 views

The Rue del Fuego

by Riccardomantero
1 comments, 916 views

Hotels in Riomaggiore

by Fabio Cammalleri
5 comments, 1057 views

Rialto Bridge 2

by Fabio Cammalleri
4 comments, 848 views

Santa Teresa Beach - Marina di Maratea - (PZ)

by Max.davide
4 comments, 1022 views

Corallini Church - Cervo (im)

by Frankiedoc
3 comments, 2394 views

The Wave 3

by Bass3d
1 comments, 755 views

% Tower Sunrise

by MassimoPerlina
2 comments, 1288 views

Villimpenta Castle

by Hannibal Height
1 comments, 1512 views

La Isla

by Riccardomantero
0 comments, 857 views

Calm and cold-blooded...

by Riccardomantero
10 comments, 1266 views

Publish your advertisement on JuzaPhoto (info)

Lake Livigno

by Massimo Di Mauro
6 comments, 1474 views

The early-morning bird...

by Riccardomantero
2 comments, 858 views

Lava Sunset

by Riccardomantero
1 comments, 872 views

Lost

by Riccardomantero
4 comments, 961 views

Smells Like

by Riccardomantero
0 comments, 1029 views

Timanfaya 2

by Riccardomantero
0 comments, 755 views

The sample photos are selected automatically between all photos posted by JuzaPhoto members, using the camera and the lens selected in the techs. If you find evident errors (e.g. photos taken with cameras and lenses that are not available yet), you can contribute to improve the page by sending a private message to the user that has entered incorrect values in the photo caption.

Irix 11mm f/4.0 : Specifications and Opinions

Buy

Offerte Usato RCE

Reviews

What do you think?

Photos taken with Irix 11mm f/4.0