SKU: 61854584092

IRIX 11mm f/4 Firefly Lens for Canon EF

Sale price$28665.00 Regular price$31850.00
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Description

IRIX 11mm f/4 Firefly Lens for Canon EFCanon EF Mount Full Frame 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 A versatile ultra wide prime lens, the Canon EF mount 11mm f 4 Firefly Lens from Irix balances a sophisticated optical design with a lightweight, durable

  • Canon EF-Mount/Full-Frame 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

A versatile ultra-wide prime lens, the Canon EF-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 full-frame Canon EF-mount DSLRs, this lens can also be used on APS-C models where it provides a 17.6mm 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 Canon EF
Performance
Focal Length 11mm
Aperture Maximum: f/4
Minimum: f/22
Camera Mount Type Canon EF
Format Compatibility 35mm Film / Full-Frame Digital Sensor
Angle of View 126°
Minimum Focus Distance 10.83" (27.5 cm)
Elements/Groups 16 / 10
Diaphragm Blades 9, Rounded
Features
Autofocus No
Physical
Filter Thread Rear Gel:
Dimensions (DxL) Approx. 4.65 x 4.06" (118 x 103 mm)
Weight 1.61 lb (730 g)
Packaging Info
Package Weight 3.2 lb
Box Dimensions (LxWxH) 7.4 x 5.8 x 5.7"
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 61854584092

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Amazon Customer
Massapequa, US
★★★★★ 5
Great quality, classic and durable wallet
Style: Bi-fold
I bought this wallet for my husband, and he’s been really happy with it. The leather feels high quality, and the wallet has a clean, stylish look that isn’t bulky. It seems very well made and durable, and it feels like it will last a long time with everyday use. The size is practical, and everything fits comfortably without being too thick. Overall, this was a great purchase and would make a nice gift.
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Reviewed in the United States on January 21, 2026
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Amazon Customer
New York, US
★★★★★ 5
Excellent Wallet — Stylish, Durable, and Practical!
Style: Front Pocket
I absolutely love this wallet. The quality is impressive — the material feels durable, the stitching is solid, and it has a sleek, modern look. It has plenty of space for cards, cash, and IDs without feeling bulky, which is a huge plus. Everything fits securely, and it’s easy to access what I need. Overall, this wallet is a perfect mix of style and functionality. Highly recommended for anyone looking for something reliable and well-made!
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Reviewed in the United States on November 28, 2025
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B.D.
Omaha, US
★★★★★ 4
Great wallet, no RFID BLOCK
Style: Front Pocket
Well made good looking wallet lots of space and the magnetic cash retention is really strong. The RFID block doesn’t work at all, I put a security access card in multiple places in the wallet and it can read it from 4 inches away like it’s not even in a wallet. Great product just don’t expect good security coverage. Front pocket so harder for a bad actor to scan without you noticing but risk still there.
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Reviewed in the United States on January 9, 2026
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City shopper
Alexandria, US
★★★★★ 5
It’s everything that is advertised.
Style: Front Pocket
It’s exactly as pictured. Bought it for my son. He loves it! Great quality leather. But, that Carhartt. Exceptional quality. Love the magnetic clip for cash. He’s a high school student. Now his ID, gifts cards , and cash are all centrally located. Instead of his pockets. Worth every penny! He wants me to order another one in case someone steals it. All his friends want one! Won’t let me give it 5 stars
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Reviewed in the United States on February 15, 2026
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Kody
Natrona Heights, US
★★★★★ 5
Carhartt bifold wallet
Style: Bi-fold
Solid wallet especially for the price. I have been very pleased by the quality and feel. Would recommend to anyone of need of a new wallet
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Reviewed in the United States on April 22, 2026

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