Irix 11mm F4
This is a full-frame prime lens for Nikon F and Canon EF, covering 11 mm and a maximum aperture of f/4. It weighs 730 g and is weather-sealed, and was released in 2017. That combination suits landscape and architecture photography.
It is an ultra wide-angle manual focus prime lens designed for full-frame DSLR cameras, available in Canon EF, Nikon F, and Pentax K mounts. With a 126° angle of view, it's ideal for capturing expansive landscapes, architectural structures, and interior spaces. The optical design includes four high refractive index elements, two extra-low dispersion elements, and three aspherical elements to minimize distortion and aberrations, delivering sharp and accurate images. The lens is available in two versions: 'Firefly' with a lightweight construction and 'Blackstone' with a more robust build. Both versions feature weather sealing to protect against dust and moisture, ensuring reliability in various shooting conditions.
- f/4
- Aperture
- 11mm
- Focal
- 730 g
- Weight
- Jan 2017
- Released
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Specification
- Lens type
- Ultra wide-angle prime lens
- Max Format size
- Full Frame
- Focal length
- 11 mm
- Image stabilization
- No
- Lens mount
- Canon EF, Nikon F, Pentax K
- Maximum aperture
- f/4
- Minimum aperture
- f/22
- Aperture ring
- No
- Number of diaphragm blades
- 9
- Optical construction
- 16 elements in 10 groups (4 high refractive index, 2 extra-low dispersion, 3 aspherical)
- Minimum focusing distance
- 0.275 m (10.83 in)
- Maximum magnification
- Not specified
- Filter size
- Rear gelatin filter holder
- Dimensions
- 103 mm (diameter) x 118 mm (length)
- Weight
- 730 g (1.61 lbs) [Firefly], 790 g (1.74 lbs) [Blackstone]
- Weather sealing
- Yes
- Usage
- landscape, architecture
Wide open at 2 m, background blur ≈ 0.0% of the frame width
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