IRIX 11mm f/4 Firefly Lens for Nikon F

IRIX 11mm f/4 Firefly Lens for Nikon F

IRIX 11mm f/4 Firefly Lens for Nikon F

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Product Highlights

  • Nikon F-Mount/FX Format
  • Aperture Range: f/4 to f/22
  • Three Aspherical Elements
  • Two ED and Four HR Elements
  • Neutrino Coating
  • Manual Focus Design with Focus Lock
  • Rubberized Focus Ring
  • Depth of Field and Focus Distance Scales
  • Weather-Sealed ABS Plastic Housing
  • Rounded Nine-Blade Diaphragm
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Price: $574.95

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IRIX 11mm f/4.0 overview

  • 1Description

A versatile ultra-wide prime lens, the Nikon F-mount 11mm f/4 Firefly Lens from Irix balances a sophisticated optical design with a lightweight, durable physical construction. Aspherical, extra-low dispersion, and high-refractive index elements are used to suppress color fringing, chromatic and spherical aberrations, as well as unwanted distortion, and also contribute to producing a high degree of sharpness and clarity. Additionally, a Neutrino coating has been applied to limit lens flare and ghosting for improved contrast and color accuracy when working in strong lighting conditions.

In addition to the imaging performance, this 11mm f/4 utilizes a manual focus design for fine-tuned control, and incorporates a unique positive focus lock to secure the focusing position at any point for consistent, repeatable shooting. As the Firefly version of this focal length, this lens is also distinguished by a lightweight ABS plastic exterior, printed lens markings, and weather-sealing about the lens housing to permit working in trying environmental conditions.

The Firefly version of the 11mm f/4 lens features a lightweight ABS plastic exterior construction that is sealed against moisture and dust along the main body of the lens. The Firefly construction also incorporates a rubber focus ring for improved grip and control, and has printed focus distance and depth of field scales to aid working with pre-focusing and hyperfocal focusing techniques.
Ultra wide-angle prime designed for FX-format Nikon F-mount DSLRs, this lens can also be used on DX models where it provides a 16.5mm equivalent focal length.
Three aspherical, four high-refractive index, and two extra-low dispersion elements are featured within the optical design to limit both spherical and chromatic aberrations, as well as color fringing and distortion, for improved clarity, sharpness, and even illumination.
A Neutrino coating has been applied to limit lens flare and ghosting for improved contrast and color fidelity.
Manual focus designed is benefitted by a positive focus lock mechanism to secure your focus position at any point to limit unwanted shifting of focus.
A hard click stop indicates the infinity position on the focus ring for easy use in low-visibility conditions.
Large depth of field scale benefits using hyperfocal and pre-focus techniques.
Built-in petal-shaped lens hood blocks stray light in order to reduce lens flare, and also protects the front element of the lens.
Rear of the lens accepts 30 x 30mm cut gel filters.
Rounded nine-blade diaphragm contributes to smooth bokeh.
In the Box
IRIX 11mm f/4 Firefly Lens for Nikon F
  • Front Lens Cap
  • Rear Cap for Nikon F-Mount Lenses stauszzsvrcdfrqfqvewxzqsuwdxvyezbeuz
  • Soft Lens Pouch (Gray)
  • Limited 5-Year Warranty
  • Table of Contents
    • 1Description

    IRIX 11mm f/4.0 specs

    Focal Length 11mm
    Aperture Maximum: f/4
    Minimum: f/22
    Camera Mount Type Nikon F
    Format Compatibility 35mm Film / Full-Frame Digital Sensor
    Angle of View 126°
    Minimum Focus Distance 10.83" / 27.5 cm
    Optical Design 16 Elements in 10 Groups
    Diaphragm Blades 9, Rounded
    Autofocus No
    Filter Thread Rear:
    Dimensions (DxL) 4.65 x 4.06" / 118 x 103 mm
    Weight 1.61 lb / 730 g
    Packaging Info
    Package Weight 3.1 lb
    Box Dimensions (LxWxH) 7.4 x 5.8 x 5.8"

    IRIX 11mm f/4.0 reviews

    11mm f/4 Firefly Lens for Nikon F is rated 4.5 out of 5 by 13.
    Rated 4 out of 5 by from If not for the flare it would be a great lens The lens is heavy and seems to be very well made. It is also way bigger than I expected. The feature to me is the very low distortion for such a very wide lens. It has the focus chip but I find that almost useless as it is very hard to know when you have the focus just right, seem easier to just use the infinity setting for distant scenes and the hyper-focal scale for everything else. The main downside to this lens and it's a big one for me is the flare I get on the upper left if the sun is in the picture. The lens does not handle that very well and will not yield a decent sun-star even when stopped down. Super lens for interiors and architecture though...
    Date published: 2017-11-14
    Rated 5 out of 5 by from Good lens, sharp, less vignette and reasionale price This the widest lens for Nikon mount and you don't have any choice with Nikon camera, for use ultra wide lens larger 14mm I had to change to Sony E mount with Voigtlander lens 10mm & 12mm, I was owned those Voigtlander lens but still try this Irix 11mm lens. The ultra Voigtlander 10mm & 12mm are very compact, can use 100mm filter's holder and have very nice sun star so I love it but they are not work well in the night, they are so week in dark condition. I try both Irix 15mm and Irix 11mm all work well in the night, they are seem special design for night photography.� The Irix 11mm also can use square filter in the front for day light landscape, you can use 150mm or 165mm filters system.
    Date published: 2018-03-18
    Rated 5 out of 5 by from The Best Super-Wide Lens The Irix 11mm lens produces professional level images.� I’ve 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 you’ll need to learn how to use them.
    Date published: 2018-01-27
    Rated 5 out of 5 by from Very impressive lens Last few years I was looking for ultra-wide lens to help me in real estate photography. Sometimes the rooms to be shot were so small so I could'n use my 15-30/2.8 and I had to proceed with 16mm fish-eye. And since I've got this Irix 11/4 and made few test shots, I have no regrets. It's perfect for any tiny place and doesn't bend the walls. The lens is sharp at 4. Being swithed to f11, it doesn't need to be focused at all. What really surprised me was an ability to take street photos. Just for fun I brought this lens to a local city event and use it for candid photography. To get a good picture I had to be VERY close to the subject. And what I did find that the people don't get scary when photographer stays within 1 meter. They think the camera was pointed somewhere out. And, what is more important, you don't need to lose time for viewfinder's look and focusing, just point and shoot.
    Date published: 2017-08-13
    Rated 5 out of 5 by from Very Sharp, Well-Built, Great Value. I'd like to give this lens 4.5 stars, but since it's not possible with the B&H rating system, I'm rounding it off to 5. 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.
    Date published: 2017-07-29
    Rated 5 out of 5 by from Excellent love this lens would buy it again!! I use this lens for landscape photography took it out the day I received it and it was exactly the lens I was hoping for, easy to focus and very sharp, build quality is great, not too heavy love it!
    Date published: 2017-07-27
    Rated 5 out of 5 by from Very good lens After 3 months of waiting I received the lens and i had tried it for few shots. the lens is tack sharp with little distortions and some CA. This super wide angle has great colors and good contrast the only negative is that I recieved the lens with scratched cap which makes it like a used one.
    Date published: 2017-06-28
    Rated 5 out of 5 by from Good build, good quality image and good price Very hard to find any ultra wide like Irix 11mm lens with this price, I love this build and sharpness of this lens, I use this for night and day landscape with 150mm filters
    Date published: 2018-03-29
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    IRIX 11mm f/4.0 Q&A

    IRIX 11mm f/4.0 accessories

    Designed for use with:

    • Nikon D3200
    • Nikon D3300
    • Nikon D3400
    • Nikon D3500
    • Nikon D4s
    • Nikon D5
    • Nikon D500
    • Nikon D5200
    • Nikon D5300
    • Nikon D5500
    • Nikon D5600
    • Nikon D610
    • Nikon D7100
    • Nikon D7200
    • Nikon D750
    • Nikon D7500
    • Nikon D800E
    • Nikon D810
    • Nikon D810A
    • Nikon D850
    • Nikon Df