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Irix 15mm f/2.4 : Specifications and Opinions

Irix 15mm f/2.4

The Irix 15mm f/2.4 is a wide-angle lens for FF and APS-C, manufactured from 2016. 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 430 €;

24 users have given it an average vote of 8.9 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.

Sony E: this lens is compatible with mirrorless fullframe and APS-C Sony.

Specifications
Focal lenght	15 mm
Angle of view	110.6°
Format	FF, APS-C
Max. aperture	f/2.4
Aperture blades	9
Lenses/Groups	15 elements in 11 groups
Min. focus distance	0.28 meters
Reproduction ratio
Features
Stabilization	No
Focus	Manual Focus
Internal Focus	No
Built and notes
Tripod ring	No
Extenders	No
Filters	95 mm
Lens hood	Yes, supplied
Weather sealing	Yes
Weight	650 g
Dimensions	114 x 100 mm
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Reviews

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The following opinions have been automatically translated with Google Translate.

EnricoTanz

sent on August 04, 2025

Pros: Focal length, 95mm (slim) filters, design, price

Cons: Difficulty in obtaining a decent copy, continuous defects, infinitely useless clicks as they need to be calibrated (fortunately you can), unusable focus lock

Opinion: I have owned this lens for both Canon and Sony. Unfortunately, running into a bad copy is very easy with Irix. When you get the decent copy, however, there are few rivals. Being able to use a screw filter on a 15mm is a lot, a lot, a lot of stuff especially for those who also want to do IR photography. The idea of the infinite click is nice, if it weren't for the fact that the infinity focus is not really at infinity that marks the ring. However, the Sony version (I don't remember the Canon version) has the ability to calibrate the focus to infinity using a small screwdriver. The focus lock is unusable: turning the ring to lock the focus it is inevitable to turn the focus ring as well. Unfortunately, the packaging leaves something to be desired, the lens almost always arrives damaged. On my return request I was told "The missing paint on the focus ring is also due to the packaging (this part is the one that bumps the most against the cardboard when the lens moves during transport), although it is usually not so noticeable. I don't think we will be able to find one without any trace. Irix should probably use plastic bags for these lenses. On the other hand, I don't feel like they've ever had packaging that didn't cause problems so far, and we're talking about five different types of boxes and inserts across the range." I don't think there is any need to add anything else. Anyway, I bought it at a 50% discount from their site for just € 300 with a nice cup for free. All in all, you can't expect much more. Is it worth it? In my opinion, yes. I will use it exclusively as a photography lens with filter (IR, ND, Polarizer) in which I can afford to have a lens that is not perfect.

Troiero Felice

sent on November 21, 2020

Pros: Distortion, sharpness, weight, infinitely adjustable focus, cost, possibility to mount filters in front.

Cons: Almost non-existent assistance in case of problems

Opinion: Reading other reviews I came up with an idea that there is no in-depth control of the optics by the manufacturer. In mine I do not find major defects in the optics, yes a bit of vignetting, but already at F4 you almost can not see (let's not forget that it is a 15mm). He had, after some time, a communication problem with the camera and assistance (from Poland) was fugitive, luckily as a smanettone I managed to fix it. All in all, I feel lucky to have him in my glass. Given my specimen I would like to highly recommend it for astrophotography and landscaping but unfortunately it is not known a priori what problems you arrive with given the other reviews.

AdrianG

sent on November 20, 2020

Pros: Construction, design, weight, price, very little distortion

Cons: Impossible focus, low sharpness, blue dominants, poor sharpness accompanied by a strange distortion on the right corner below.

Opinion: Lho used on canon and Sony with mc11. On canon apsc almost satisfactory result. On sony, let's forget it. But I was surprised by the interior photos. Bought new and resold after a year at 200€... I'm not a professional, but I notice it when the stuff is scarce. It's not good even with the original irix polarizer. I just learned my :p little expense.

Nessunego

sent on January 14, 2020

Pros: Construction, infinite click, infinite adjustment, lockable window on lampshade to rotate filters, focus lock, f2.4, possibility of front screw and rear jelly filters, little distortion, good flare handling.

Cons: Nothing special.

Opinion: I have the Firefly version, made of plastic but built very well. It is a lens that is seen to have been designed on the basis of the needs of those who make landscape and astrophotography. Infinite click and adjustable infinity allow you to focus on infinity without looking (in the dark, for example); the maf ring has a bulge that allows a safe grip even with heavy gloves (useful for those who take photos in the cold!); The maf block allows you not to inadvertently lose the correct maf, perhaps by screwing an ND1000 filter to the lens after focusing without; The lampshade has an opening and resealable window to rotate a polarizing filter without removing the lampshade itself; You can use filters to the front screw (95mm,a bloodletting, but less than the slab ones) and rear jellies; the firefly version is also tropicalized (albeit with a few less seals). The price used is even more tempting than the new one. A lens for me really well thought out and carefully crafted. The image quality is very good, with excellent sharpness in the center and also at the edges if you close to f5.6-f11 (as you use to do in landscape). At the corners the coma is up to f3.5, then it goes much better, considering that it is a 15mm you can think of cropping away the worst corners in pp. I vignette abundantly up to f5.6, but it is in the norm for a 15mm f2.4 and honestly corrects itself in a click in pp. It distorts little on ff, with simple cushion distortion, even here with two clicks goes into place. The conclusion that this lens leads me to synthesize is: probably the ergonomics of use and some simple found in certain photographic areas count as much as the quality of the image, because it is definitely better to take photos in focus with an Irix taking advantage of the block of the maf dive or adjusting in the field (maybe at - 20 degrees, that a little stand the calibration of the maf) the scale of infinity, rather than taking out-of-focus photos with a Zeiss Batis because you do not realize that you have a little moved the maf guineas by screwing a filtr or ND1000. All at a price that is clearly palatable. Good Irix!

Tonyfg86

sent on December 08, 2018

Pros: Screw Filters-sharpness-No Distortion

Cons: If you shoot in backlight can occur in photos the presence of flare that can safely be removed in the development phase

Opinion: I own this lens from April 2018 that I use as wide angle on my Nikon D750. Unlike the APS-C universe, in the Full Frame world, there are very few and rare wide-angle lenses that don't force you to assemble holder and bulky, delicate and very expensive slab filters, and that's why I chose the Irix 15 f/2.4. Probably not everyone knows that this lens is produced in two versions: Blackstone and Firefly. I chose the Firefly version. The differences between the two are as follows: The Blackstone costs more because it consists of more robust and heavier material, it is tropicalized to 100% and has phosphorescent numbers. The Firefly is cheaper and is made of lighter material, and tropicalization is partial. The lens group is exactly the same. I never go out to photograph in extreme weather situations, and for this reason I chose the Firefly. I am fully satisfied with the sharpness. I do not notice any particular coma at the edges and especially if I put the machine in bubble, the classic wide angle barrel distortions are almost absent. Those minimal distortions that can occur are easily arranged in post production, same thing with regard to the possible presence of flare. In my gallery I have several photographs made with Nikon D750 + irix 15 f/2.4 that you can go to examine. As filters for this magnificent lens I have a polarizer of nisi and a ND 1000 always of nisi. I forgot to tell you that these IRIX lenses can also fit some small jelly filters applicable on the back, but I have not had a way to try because I prefer the classic screw filters. P.S.: When I mount the 2 screw filters one on the other, first the polarizer and then the ND, there is a vignetting that however I go to eliminate in the development phase. I think I said it all.

There are 3 more reviews. Show all »

Photos taken with Irix 15mm f/2.4

Jeseniki

by Drvector
56 comments, 5648 views

Sunset over the three peaks of Lavaredo

by GinoDelaiti
47 comments, 8050 views

HI RES 20.2 MP

Vestrahorn Mountain, New England

by AvvGonzo
48 comments, 3782 views

HI RES 19.0 MP

The Giant of Iceland

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47 comments, 3019 views

Sunset in the brianza ..

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37 comments, 3364 views

Sunset over the lake

by Lio2001
24 comments, 3051 views

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Between thunderstorms and milky way

by Rudy85
19 comments, 4915 views

Spring Storm

by Lio2001
14 comments, 2564 views

The Aragonese castle at the first lights of the day

by Tonyfg86
40 comments, 4082 views

Milky Way on Lavaredo's Three Peaks

by GinoDelaiti
19 comments, 3211 views

My Dream

by Lio2001
10 comments, 4161 views

Vestra

by Leftorium89
19 comments, 367 views

HI RES 6.3 MP

Soon the resinelli

by Lio2001
18 comments, 1928 views

Jeseniki

by Drvector
9 comments, 1887 views

Purple Autumn

by AvvGonzo
9 comments, 3289 views

HI RES 24.2 MP

Untitled Photo

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17 comments, 3318 views

Lake Sorapis

by GinoDelaiti
15 comments, 2610 views

HI RES 23.9 MP

Waterflow, C.

by AvvGonzo
11 comments, 1532 views

HI RES 21.1 MP

Looking for the polar star

by EnricoTanz
3 comments, 3109 views

HI RES 11.9 MP

Diamond

by Leftorium89
10 comments, 307 views

HI RES 30.1 MP

Last flashes of a spent Christmas

by Copernico
7 comments, 2751 views

The last dawn

by AvvGonzo
10 comments, 1451 views

Castel Boccale

by Jonathan Giovannini
4 comments, 1679 views

It is day to the Bay of Copanello

by Tonyfg86
10 comments, 1846 views

Golden Waterfall

by AvvGonzo
8 comments, 1434 views

HI RES 24.2 MP

Jeseniki, like Easter Islands if there was snow there:D

by Drvector
6 comments, 1735 views

Sunrise at Isola Bella - Taormina

by Nikywolf78
4 comments, 2398 views

HI RES 24.1 MP

Piazza Teatro Massimo

by Nikywolf78
6 comments, 2897 views

HI RES 30.1 MP

Dawning At Copanello's Cliff

by Tonyfg86
38 comments, 1376 views

Sunset on Cypress Choline

by Lio2001
11 comments, 1721 views

The Bay of Copanello In long exposure

by Tonyfg86
21 comments, 2185 views

Snowy Dream

by Jonathan Giovannini
4 comments, 1585 views

Colosseum

by GinoDelaiti
7 comments, 1524 views

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The Monumental Cemetery At Night

by Tonyfg86
28 comments, 1819 views

Grazing light

by Jonny78jjj
6 comments, 1263 views

Star Trail St. Mary's Church of Mercy

by GinoDelaiti
6 comments, 1239 views

HI RES 30.1 MP

Sunset in the Storm

by Lio2001
9 comments, 1072 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.

Reviews » Lenses » Lenses Irix » Irix 15mm f/2.4

Irix 15mm f/2.4 : Specifications and Opinions

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Offerte Usato RCE

Reviews

What do you think about this lens?

Photos taken with Irix 15mm f/2.4