Quick answer
The Irix 15mm f/2.4 is a ultra-wide prime lens covering 15mm at f/2.4 for the Canon EF mount. Its bright maximum aperture handles indoor and evening light reasonably well.
About this lens
The Irix 15mm f/2.4 is a wide-angle prime lens covering 15mm at f/2.4 for Canon EF mount cameras. The wide view suits landscapes, architecture and environmental shots.
Irix 15mm f/2.4 specifications
What can you shoot with the Irix 15mm f/2.4?
At 15mm this is a ultra-wide prime, which typically suits:
- Landscapes and big skies
- Architecture and interiors
- Astrophotography and night skies
Its bright maximum aperture handles indoor and evening light reasonably well.
Full-frame equivalent and field of view
Calculated from the focal length and crop factor. Not measured.
| Sensor | Crop | Equivalent | Horizontal FOV | Diagonal FOV |
|---|---|---|---|---|
| Full frame | 1.0x | 15mm | 100.4° | 110.5° |
| APS-C | 1.6x | 24mm | 73.7° | 84.1° |
Frequently asked questions
What mount does the Irix 15mm f/2.4 use?
It uses the Canon EF mount, so it fits Canon EF cameras directly.
What is the focal length of the Irix 15mm f/2.4?
It is a fixed 15mm lens with a maximum aperture of f/2.4. That makes it a ultra-wide lens.
Is the Irix 15mm f/2.4 a prime or a zoom lens?
It is a prime lens with a fixed 15mm focal length. Primes usually open wider than zooms; this one opens to f/2.4.
What is the Irix 15mm f/2.4 equivalent on a crop sensor?
On APS-C (1.6x crop) it frames like 24mm on full frame, with a 73.7° horizontal and 84.1° diagonal field of view. These figures are calculated from the focal length and crop factor.
Which cameras does the Irix 15mm f/2.4 fit?
Any Canon EF-mount camera, including Canon EOS 1D X, Canon EOS 5D, Canon EOS 5D Mark II, Canon EOS 5D Mark III, and Canon EOS 5D Mark IV and 7 more.
Alternatives for Canon EF from other brands
All Canon EF lensesSame mount, overlapping focal range, closest maximum aperture first.
