IRIX 11mm f/4 Firefly

Irix 11mm f/4 Firefly

Lens Summary

Brand: Irix

Also Known As: Irix 11mm f/4

Lens Type: Prime Lens

Format: Full Frame / FX

Focus: Manual Focus

Lens Mount: Canon EF, Nikon F, Pentax K

Release Date: 2017-03-02

MSRP Price: $574.95

Made in: South Korea

Production Status: In Production

Lens Description: 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.

Photography Life Review Summary: This is a lens for rather special purposes, I do not recommend starting with this lens to anybody who has not photographed with any wide angle yet. Creative and advanced photographer looking for new tools and perspectives may feel attracted to this lens. Read the full IRIX 11mm f/4 Firefly Review by Photography Life.

IRIX 11mm f/4 Firefly Specifications

Lens Specifications
Lens TypePrime Lens
Focal Length11mm
Mount TypeCanon EF, Nikon F, Pentax K
FormatFull Frame / FX
Compatible Format(s)Full Frame / APS-C
Compatible with TeleconvertersNo
Image StabilizationNo
Aperture Information
Aperture RingNo
Maximim Aperturef/4
Minimum Aperturef/22
Maximum Angle of View (Full frame or larger format)126°
Optical Information
Lens Elements16
Lens Groups10
Diaphragm Blades9 (Rounded)
Extra-Low Dispersion Glass Elements2
Special Glass ElementsFour HR Elements
Aspherical Elements3
Nano CoatingYes
Focus Information
FocusManual Focus
Built-in Focus MotorNo
Minimum Focus Distance10.83" (27.5 cm)
Filter Information
Filter SizeN/A
Accepts Filter TypeN/A
Physical Characteristics
Weather / Dust SealingYes
Mount MaterialMetal
Dimensions4.65 x 4.06" (118 x 103 mm)
Weight1.61 lb (730 g)
Other Information
Available in ColorsBlack

Lens Construction

Irix 11mm f/4 Lens Construction

MTF Chart

Irix 11mm f/4 MTF Chart


Irix 11mm f/4 Distortion

Sample Images

Irix 11mm f4 Image Sample (25) Irix 11mm f4 Image Sample (19) Irix 11mm f4 Image Sample (18)

Irix 11mm f4 Image Sample (1) Irix 11mm f4 Image Sample (21) Irix 11mm f4 Image Sample (23)


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