Name: Used IRIX 15mm f/2.4 Firefly Lens for Pentax DSLR Cameras - Manual Focus undefined
Brand: IRIX
SKU: US1410435
Price: 279.00 USD
Availability: Discontinued
Rating: 4.6 (33 reviews)

IRIX 15mm f/2.4 Firefly Lens for Pentax DSLR Cameras - Manual Focus

IRIX 15mm f/2.4 Firefly

IRIX

IRIX 15mm f/2.4 Firefly Lens for Pentax K

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Adorama

Used

Photography

Lenses

SLR Lenses

IRIX SLR Lenses

IRIX 15mm f/2.4 Firefly 

Top Rated Gear: Used IRIX 15mm f/2.4 Firefly Lens for Pentax DSLR Cameras - Manual Focus undefined

The rectalinear Full Frame super-wide angle lens with an angle of view of 110&#189;. The detachable lens hood along with the filter window for a better control and comfort of use and the 95 mm filter thread make this lens the best in its class tool for professional photographers. 3 high refractive lenses, 2 ED lenses, 2 aspherical lenses guarantee a very low distortion. The Focus Lock system, special weather and dust sealing, the infinity click, a rear filter slot are all combined in the solid aluminium alloy construction that makes Irix the best companion in every photographic situation.  This practical and professional lens is designed by our engineers to give you a precision tool that sets new standards for the way you work, in an affordable package.  The Irix 15mm Firefly is a manual, super-wide-angle lens that allows you to include much more of the scene for a greater sense of space and incredible effects. It's the perfect lens for landscape, architectural and even interior photography. This versatile lens will adapt to every situation and the results are impressive, to say the least. The built-in hyperfocal distance scale gives you precise information about the depth of field for each shot. The ergonomic focusing ring incorporates a convenient click-stop for the infinity setting. An innovative focus lock lets you easily set the focus anywhere on the scale and keep it there for consistently repeatable results and to help avoid focus drift. With a minimum focusing distance of 11.02" (0.28m), you can get in close to your subjects for great wide-angle effects.

Used IRIX 15mm f/2.4 Firefly Lens for Pentax DSLR Cameras - Manual Focus undefined

Very good lens for the money. Excellent value

I love it

Tried it on my Canon RP with Canon RF-EF adapter. Impressed by the sharpness and build quality. The focus ring is very tight. I like the ability to change the aperture using my camera instead of turning a ring on the lense in competitor's lense. 15mm at f/2.8 is what I used for astrophotography. First shots using lense shown. Focus lock and infinity focus click are nice features. I like the lense hood and cap. Cap can be tricky to put on in the dark.

Sharp and great features.

This is a great value! I love the lens and some of the included items are great surprises!

Irix lens and bonus items.

What a fun lens! I wish I would have sprung for the more expensive version. But this one does all I need plus!

Irix Firefly 15mm lens.

Very nice using this IRIX 15mm f/2.4 lens with the FTZ adapter on my Z6 and for my D810. It's pretty easy to manually focus however, the unique focus lock ring is quite stiff. It has the connections to let you control aperture and you get full EXIF data. So far it's sharp, well controlled distortion, easy, and fun to use with weather sealing, filter use availability. All of that for a very reasonable price!  Still testing the copy I got.

Great budget astrophotography lens

Love using this IRIX 15 f/2.5 lens with the FTZ adapter on my Z6. It's super easy to manually focus. It has the connections to let you control aperture and you get full EXIF data. It's super sharp, easy, and fun to use with weather sealing to boot . All of that for a very reasonable price !

Outstanding manual wide angle lens!

Solid lens. Overall very satisfied, only complaint is that the manual focus ring is a bit stiff.

Good

This lens had the worst decentering I’ve ever seen. Entire left side of the frame was soft, regardless of aperture. From reading online, irix seems to have quality control issues. Glad adorama has a good return policy

Buyer beware

I was going to buy the Rokinon/Samyang 14mm lens for milkyway shots until I discovered this lens. With only (&) more than a Rokinon, this is still a cheap lens, however, I believe it is better in everyway (at least according to the specs). Some said that the infinity mark is usually not very accurate, but at least mine is pretty accurate for stars. I have only taken it out once for a milkyway shot (cloudy all the time in the midwest!) and very happy with the results. I am only planning to use this lens for astrophotography so I am not worried about filters, still it is good to know that you do not need an expensive filter system for landscapes with the front element not being a huge bulb. If you are hesitating between the Firefly and Blackstone version like I did, just get the Firefly version because it is already a fantastic lens, buy a Nikon 50mm f/1.8 with the money you saved. I highly recommend this lens.

Best budget astrophotography lens

The way I look at this lens is ROI - for the price it simply can't get any better. Beautiful landscape and astro shots with minimal distortions. For the artistic bokeh it's not the best but gives a nice subdued softness.

Value can't be beat

I purchased the Irix 15mm lens to do some interior photography, and it’s been great. The focus lock was set to infinity right away without me having to do any calibration, and with focus peaking in my Sony A7rii, I haven’t missed the autofocus. Distortion is surprisingly minimal, and what is there is easily fixed in Lightroom. It’s been pretty sharp, and I’m very happy with my purchase.

Pretty good ultra wide for the price

Great ff wide angle lens. Sharp as a tack with pleasing color rendition. My favorite wide angle for my D750 and I have several other wide lens. Great build quality and attention to detail. Like it so well thinking about buying the Irix 150 macro.

Sharp, Sharp Sharp

I love this lens for landscapes, for astrophotography though there's a minor flaw in it as it makes stars into comas. Other than that it's a great lens.

Nice lens

Good glass bad focus

Tack sharp, solid built, my only complain is the focus scale seems to be a bit off defacto(don't trust the camera confirmation), and the customer service  yet to get back to me after a month, that aside, if you have the patience to sit it out focusing, amazing glass

Sharp, well built, bangitty buckity

I've only used this lens for a few days.  For the money, it's incredible.  It is just as sharp as my L glass, maybe better.   At the very edges it is quite soft, but everywhere else quite good.  I might leave a little room for cropping.  As I shoot only at night, I pretty much have to shoot wide open.  Stopped down might be even better.  Manual focusing in the dark is a bit of a challenge but for day time landscapers, it should be a snap, especially with Canon focus confirmation. If you don't mind the weight, I could see getting the more rugged metal version, but given the weight, I am glad I got the Firefly. 70-200 L; 24-70 L; Irix 15 -- a comprehensive combination.

Darn good value

I like to improve my lens collection but keep costs and weight down. I have a 24mm Tilt/Shift which I have grown to love but frequently wished for something a bit wider. The wide angle zooms seem quite good today but they are heavy and expensive. This IRIX 15mm does the job perfectly for me. In addition, I get a full set of ND filters included so I only need to add the CPF. The pictures I am getting are very sharp and nicely contrasty so I am very happy with that.

Great addition to my lens collection

I bought this lens for Milky Way photography in which a fast lens is an advantage if not a must.  Accurate infinity focus is critical and this lens is calibrated well right out of the box.  It focuses best on stars at the full infinity setting.  I've had other wide angle prime lenses that were way off in this respect.  I had a bit of an issue attaching the included lens shade which didn't seem to fit properly.  I contacted Irix support by email and they were very responsive.  Problem solved.  My first results are excellent and I've concluded that the lens is a keeper.  It will work on both crop sensor and full frame cameras but the lens really shines on full frame for my particular application (Milky Way). See the included photo.

Irix 15mm Firefly

I use both Firely and Blackstone version, both are very sharp but not in all frame position, one is more sharp in the right and the other is better in the left, that is some issue about quality control, but for me it is not a big problem.
I choose this for landscape photography because it is very good perfromance/ price and the most importance for me that it can use 100mm square filters system in the front of lens instead of 150mm system so you can save huge of money, space and wieght in your bag

Best lens with it's price

I love this lens.  The quality is high both optically and in its overall build.  The results I've gotten so far are outstanding, especially for the price of this lens.  I also have the 11mm in Pentax mount and it, too, is outstanding.  Highly recommend.  The lack of auto-focus in a focal length this wide is not an issue because of the extreme depth of field.  But, you have to remember to focus it manually, or you can get images that are not in focus.

Awesome lens!

I bought this lens for capturing wide angle landscapes, architecture and astro photography shots. So far I've only used it for landscapes on my but I have to say I'm impressed. For the price this is a great little lens. I went for the firefly to save weight and it feels reasonably sturdy considering its all plastic. 

What I really noticed about this lens though is the lack of distortion, I also have the nikon 16-35mm and this gives much straighter edges. Its also very sharp when you nail the focus. 

I wish I could get an autofocus version but at this focal length its not really a major problem. The focus ring clicks into place at infinity and seems to be reasonably accurate. 

The only real downside I noticed is that the photos tend to look slightly underexposed so I have to up my exposure compensation slightly.

All in all a great value lens from a reasonably unknown manufacturer. I look forward to seeing what else Irix will come out with.

Great little lens

Fast focus, ease of use, sharp images and minimal distortion for such a wide angle lens. very happy with it, would recommend.

hyper focal scale

This is my first wide angle lense. I used it on my canon 80D and Canon D classic. Lense is recommended for a full body camera but it does work well on a crop sensor too. You just get less field view. The lense fells extremely solid and well built. Love the packaging in a metal box, extra protection. It also came with a protection case. I am looking forward to see what futur lenses this new Swiss company is going to produce!

Gorgeous lense

Great lens - sharp to the corners.  The only issue i have is that infinity focus is not where it should be... but there is an adjustment for that, I just haven't been able to do it correctly yet.

Great lens - sharp to the corners

Lens works great on a tripod with immobile subjects (architecture, landscapes, astrophotography) but manual focus only design impractical given autofocus alternatives of comparable image quality.  Returned lens to replace with Nikon 18-35mm AF-D.

Manual focus-only design is impractical given alternatives

The lens is on the heavy side. However is worth it

First I would like to thank Ms. Trixie of Adorama for going out of way to make sure I get my lens before my vacation. Keep it up!

Now, the lens arrived well packaged in a card board and the actual lens was inside a tin can! I bought the cheap Firefly version - but there is nothing cheap about this lens. The little expensive model is supposed to be all metal and few additions but this version is more than enough for my usage. It is by no means cheap plastic looking lens. The construction pro quality.

Performance: The sharpness is is just wonderful even wide open and this is expected for most of the wide angle lens. The focus confirmation works very well with my Nikon and love the focus ring feel. Also bought a filter adapter for my 6 stop ND filter and works well. This is the main reason I bought this lens. You can attach filters in the front and / or at the back of the lens!

Wide angle lenses are easy to focus manually because of large DOF. So if you are thinking about going wide, I would highly recommend giving this lens a try.

Now, why I gave only 4 stars is that the tin can, was slightly damaged inside the original cardboard box. I am sure it was not fault of the Adorama but the original packager. The lens performs flawlessly and did not want to return/exchange the lens for that reason!

Great lens!

I purchased this lens primarily for landscape astrophotography, and hopefully for daytime landscapes as well. So far I've only had one opportunity for a night shoot, but I'm impressed. The lens is quite sharp wide open, and coma and other abberations in the corners are low. Also, the infinity click stop appears to be accurate. The build quality is high, but the lens is actually lighter than I expected. I fully expect to get a lot of great images with this lens.

Used IRIX 15mm f/2.4 Firefly Lens for Pentax DSLR Cameras - Manual Focus

Buy it New

IRIX 15mm f/2.4 Firefly Lens for Pentax K