Irix 11mm F4 is a Fixed aperture Manual Focus (MF)
Ultra-Wideangle Prime lens with 35mm FF max sensor coverage, and it is designed to be used with
EF Mount cameras.
What type of photography is the Irix 11mm F4 lens good for?
The choice of photography type for which you intend to use the Irix 11mm F4 is a crucial decision factor. Below, we have assessed its suitability for various photography scenarios:
Reasons to Buy the Irix 11mm F4 Lens
Here we've included a summary of the advantages and disadvantages of the Irix 11mm F4 lens in a list form to assist you in determining whether it offers the features you need.
| Weather-sealed |
| Aperture Ring |
| Distance Scale |
| DoF(Depth of Field) Scale |
| Hood supplied |
| Full-time Manual Focusing |
| Covers Full-Frame Sensor |
| 9 Diaphragm Blades for Smooth Bokeh |
| Extreme Wide-angle capability |
| Min focus distance of 0.28m / 11.0 inch |
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| No Autofocus |
| Not so fast for a short Prime Lens |
Lens Mount
Irix 11mm F4 is compatible with cameras that have a Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K.
Size, Weight and Filter Thread
The size and weight are crucial factors to consider when searching for your next lens. Irix 11mm F4 has a maximum diameter of 103mm and a total length of 118mm. It weighs 790g / 27.9 oz.
Focal Range
Irix 11mm F4 has a fixed focal length of 11mm.
Weather Sealings
The Irix 11mm F4 is a weather-sealed lens, which provides extra protection to prevent water and dust get inside the lens and camera body under light rain, snow and wind. In order to have effective protection, you have to pair the Irix 11mm F4 with a weather-sealed camera body such as the Canon 1D X III, Canon 6D MII and Canon 5D MIV.
Optical Image Stabilization
Irix 11mm F4 doesn't have an optical image stabilization system so the only option to stabilize the image taken with this lens is to mount on a camera body with IBIS (sensor based In-body image stabilization).
Maximum Magnification Ratio
Irix 11mm F4 has a Max Magnification Ratio of 0.07x with a minimum focusing distance of 0.28m. 0.07x ratio is quite low, making this lens unsuitable even for modest close-up photography.
Below are the 3 Ultra-Wideangle Prime type Canon12 mount lens alternatives with highest max magnification ratios:
Aperture
The Irix 11mm F4 features a maximum aperture of F4 and can be stopped down to a minimum aperture of F22. While a maximum aperture of F4 requires a bit more ambient light or a bump in ISO when shooting indoors, it keeps the physical size of the lens much smaller and easier to carry. Given the wider 11mm field of view, the background will naturally stay a bit more in focus, making it ideal for environmental portraits, street photography, or landscapes where context matters. The minimum setting of F22 is excellent for deep depth of field work like macro photography, though you may want to avoid the absolute smallest settings to skip the sharpness loss caused by optical diffraction.
Optical Formula
Irix 11mm F4's optical formula consists of 16 elements in 10 groups . The following special elements are used in this design:
- 3 aspherical
- 4 HRI
- 2 ED elements
- Neutrino coating
Lens Hood
Irix 11mm F4 comes with a removable lens hood which is handy to reduce lens flare and glare in your photos.
Popular Comparisons of Irix 11mm F4
Here are the 8 most popular comparisons of the Irix 11mm F4 amongst Camera Decision readers.
Top Alternatives of Irix 11mm F4 Lens
In addition, it would be interesting to check which lenses from other mounts are most commonly compared with the Irix 11mm F4.
Top Alternatives of Irix 11mm F4 in Other Lens Mounts
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