SKU: 76707495213

IRIX 11mm f/4 Blackstone Lens for Canon EF

Sale price$31536.00 Regular price$35040.00
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Ships within 48 hours · Estimated delivery Sep 11 - Sep 16

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Description

IRIX 11mm f/4 Blackstone 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 UV Fluorescent Engraved Markings Depth of Field and Focus Distance Scales Weather Sealed Magnesium Alloy Housing Rounded Nine Blade Diaphragm Distinguished by its refined physical construction, the 11mm f 4 Blackstone Lens from Irix is an ultra wide prime designed for Canon EF mount

  • 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
  • UV Fluorescent Engraved Markings
  • Depth of Field and Focus Distance Scales
  • Weather-Sealed Magnesium Alloy Housing
  • Rounded Nine-Blade Diaphragm

Distinguished by its refined physical construction, the 11mm f/4 Blackstone Lens from Irix is an ultra-wide prime designed for Canon EF-mount DSLRs. As a rectilinear lens, the advanced optical layout makes use of aspherical, extra-low dispersion, and high-refractive index elements to control distortion and aberrations for accurate, and sharp rendering with a high degree of clarity and color accuracy. Additionally, a Neutrino coating has also been applied to the lens to control flare and ghosting for improved contrast when working in strong lighting conditions.

Beyond its optical assets, this 11mm f/4 lens also sports 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 Blackstone version of this focal length, this lens is also distinguished by an aluminum and magnesium alloy exterior, engraved lens markings with fluorescent UV paint for high visibility, and extensive weather-sealing about the lens to permit working in harsh environments.

The Blackstone version of the 11mm f/4 lens features a durable aluminum and magnesium alloy housing and weather-resistant exterior along with inner seals, and an extra seal at the front element, to protect against dust and moisture intrusion. The metal exterior also distinguishes itself with an anti-scratch finish, and sports engraved focus distance and depth of field scales with fluorescent UV paint for high visibility when working in low-light conditions.
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 Blackstone 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 1.74 lb (790 g)
Packaging Info
Package Weight 3.05 lb
Box Dimensions (LxWxH) 6.7 x 5.6 x 5.6"
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:
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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: 76707495213

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Melinda Rimini
Chelsea, US
★★★★★ 1
STEER CLEAR
Color: Can’T Be Tamed, Size: 9.5" h x 8" w x 4.5" d, Color: Can’T Be Tamed, Size: 9.5" h x 8" w x 4.5" d
Very thin and cheaply made! Same brand sold in Sam's Club in a 3-pack was of much better quality! Steer clear of these!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
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Verified Purchase
W. Grubbs
San Leandro, US
★★★★★ 1
Not sewn together well
Color: Can’T Be Tamed, Size: 9.5" h x 8" w x 4.5" d, Color: Can’T Be Tamed, Size: 9.5" h x 8" w x 4.5" d
Back seam ripped open within the first 30 seconds of giving it to my dog.
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Reviewed in the United States on March 5, 2026
J
Jeg
West Palm Beach, US
★★★★★ 4
Cute donuts. Not destroyed (yet!)
These squeaky doughnuts are really cute. It’s a bonus that it comes with two. I didn’t realize that when I ordered. I have two dogs and now they won’t fight over a doughnut just kidding one dog is 14 and doesn’t play with toys anymore. The other one is six and loves toys but for some reason he’s not really into this one maybe this will change but for now he only goes after it if I throw it, I’ll update this review to comment on durability if and when he starts playing with the toy, but for now it’s very adorable because it’s just sitting on the floor. Update: he picked one up only because I put it in front of him to take the photo!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
M
MobiusBookReview
Natrona Heights, US
★★★★★ 5
Double the Fun
This two-pack was a really nice surprise. The toys are super cute, soft, and just the right size for carrying around, which made them an instant hit with my pup. He loves having a toy he can easily grab and parade around the house, and these are perfect for that. The plush material is soft enough to make them great comfort toys, but they also have that fun squeaky element that keeps things interesting. I like that getting two in the pack gives a little backup when one gets slobbery or needs a quick cleanup. These are better for gentle play and cuddling than for heavy chewing, but for a puppy or dog that likes soft carry-around toys, they are a great choice. Adorable, fun, and a good value for a two-pack.
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Reviewed in the United States on April 18, 2026
P
Verified Purchase
Pat
New York, US
★★★★★ 5
Absolute favorite toy for almost a year
My dog’s favorite toy for almost a year. It has held up amazingly. I’m sad it’s no longer available. Please bring it back!
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Reviewed in the United States on April 29, 2026

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