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]
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SKU: 61854584092

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Mac
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★★★★★ 5
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Size: 11.5, Color: Ivory/Natural
I purchased the Cole Haan GrandPro Rally Canvas Court Sneakers in the cream/white color for both my husband and my brother, and they absolutely love them. These sneakers are sharp-looking, versatile, and pair well with everything from jeans to more polished, dressy-casual outfits. Most importantly, they're incredibly comfortable right out of the box. The quality and craftsmanship are exactly what I've come to expect from Cole Haan. If you're looking for a clean, classic sneaker that can be dressed up or down, I highly recommend these. A great purchase all around!
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Reviewed in the United States on May 30, 2026
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vhb
Omaha, US
★★★★★ 5
100% satisfy
Size: 10, Color: Ivory/Natural
Well made Canvas; Perfect fit; Beautiful design and look; Complementing material; Casual Elegance; Excellent price. I tried them with and without socks and they are as comfy as they can be. The elastic shoelaces gives them a better fit and hold all around.
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Reviewed in the United States on April 6, 2026
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Lake Worth, US
★★★★★ 5
Good shoe and affordable.
Size: 10.5, Color: Dusty Olive/White
Shoes fit and are very comfortable
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Reviewed in the United States on April 26, 2026
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Lex Oliver
Port Orchard, US
★★★★★ 4
Solid sneakers—worth it on a good discount
Size: 9, Color: Vintage Indigo Canvas/Natural
These sneakers are solid overall. They look good and feel comfortable for everyday use, and the quality is what I’d expect from the brand. One thing to note: if you have to walk a lot, they can start to feel less comfortable on the top of the foot (upper area). It’s not a dealbreaker, but you’ll notice it on longer days. That said, they’re definitely worth it if you catch a really good discount.
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Reviewed in the United States on February 12, 2026
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thomas w. smith
Phoenix, US
★★★★★ 5
Quality sneaker.
Size: 12, Color: Ivory/Natural
Good looking sneaker. I wear a 12, these seem to run large.
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Reviewed in the United States on April 21, 2026

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