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IRIX 15mm f/2.4 Firefly Lens for Canon EF

BH #IR15FFC • MFR #IL-15FF-EF
IRIX 15mm f/2.4 Firefly Lens for Canon EF
Key Features
  • Canon EF-Mount/Full-Frame Format
  • Aperture Range: f/2.4 to f/22
  • Two Aspherical Elements
  • Two ED and Three HR Elements
An impressively wide prime lens, the Canon EF-mount 15mm f/2.4 Firefly Lens from Irix meshes an advanced optical design with a lightweight, durable physical construction. The expansive field of view is complemented by a sophisticated optical layout that utilizes low dispersion, aspherical, and high-refractive glass elements, as well as a Neutrino coating, to render imagery with low distortion, controlled spherical and chromatic aberrations, high contrast, and natural color rendering.
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IRIX 15mm f/2.4 Firefly Overview

An impressively wide prime lens, the Canon EF-mount 15mm f/2.4 Firefly Lens from Irix meshes an advanced optical design with a lightweight, durable physical construction. The expansive field of view is complemented by a sophisticated optical layout that utilizes low dispersion, aspherical, and high-refractive glass elements, as well as a Neutrino coating, to render imagery with low distortion, controlled spherical and chromatic aberrations, high contrast, and natural color rendering.

In addition to the imaging performance, this 15mm f/2.4 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 15mm f/2.4 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.
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 24mm equivalent focal length.
Two aspherical, three 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.
Front of lens has 95mm-diameter filter threads and the rear of the lens accepts 30 x 30mm cut gel filters to lessen the likelihood of vignetting.
Rounded nine-blade diaphragm contributes to smooth bokeh.
Includes complimentary additional rear lens cap.

IRIX 15mm f/2.4 Firefly Specs

Key Specs
Focal Length
15mm
Maximum Aperture
f/2.4
Lens Mount
Canon EF
Lens Format Coverage
Full-Frame
Focus Type
Manual Focus
Image Stabilization
No
Filter Size
95 mm (Front)
Gel Filter (Rear)
Maximum Aperture
f/2.4
Minimum Aperture
f/22
Lens Mount
Canon EF
Lens Format Coverage
Full-Frame
Angle of View
110°
Minimum Focus Distance
11.02" / 28 cm
Optical Design
15 Elements in 11 Groups
Diaphragm Blades
9, Rounded
Focus Type
Manual Focus
Image Stabilization
No
Filter Size
95 mm (Front)
Gel Filter (Rear)
Dimensions (ø x L)
4.49 x 3.94" / 114 x 100 mm
Weight
1.28 lb / 581 g
Packaging Info
Package Weight
2.555 lb
Box Dimensions (LxWxH)
6.75 x 5.65 x 5.6"

IRIX 15mm f/2.4 Firefly Reviews

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