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Irix 11mm f/4.0 Blackstone is a weather-sealed ultra-wide manual focus lens for Canon EF with minimal distortion and a 126° field of view.
Irix 11mm f/4.0 Blackstone Canon EF
Product ID: 10229
SKU: 10229
Model: IL 11BS EF
Ean: 7640172190296
Condition: New product
Manufacturer: Irix Lens
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| Lens mount | Canon EF |
| Lens Format Coverage | Full Frame |
| Lens Design | Prime Lenses |
| Lens focus length, mm | 11 |
| Focus Type | Manual Focus |
| Image Stabilization | No |
| Lens type | wideangle |
| Maximum Aperture | f/4 |
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Product details
Irix 11mm f/4.0 Blackstone Lens for Canon EF Mount
The Irix 11mm f/4.0 Blackstone is an ultra-wide-angle prime lens designed for Canon EF-mount DSLR cameras, offering a 126° diagonal field of view ideal for landscape and architectural photography.
Optical Design and Performance
- Focal Length: 11mm
- Maximum Aperture: f/4
- Minimum Aperture: f/22
- Format Compatibility: 35mm Film / Full-Frame Digital Sensor
- Angle of View: 126°
- Minimum Focus Distance: 27.5 cm
- Lens Construction: 16 elements in 10 groups, including 4 high refractive index elements, 2 extra-low dispersion (ED) elements, and 3 aspherical elements
- Diaphragm: 9 rounded blades for smooth bokeh
- Distortion: Minimal, as low as 3.13%
Features and Build
- Manual focus design with a unique positive focus lock to secure focus position for consistent and repeatable shooting
- Focus confirmation for precise control
- Neutrino coating applied to lens elements to reduce flare and ghosting, enhancing contrast in strong lighting conditions
- Weather-sealed construction protects against dust and moisture, enabling use in harsh environments
- Durable body made from aluminum and magnesium alloy
- Engraved lens markings with fluorescent UV paint for high visibility in low light
- Rear filter thread: 30 x 30 mm
Physical Specifications
- Dimensions: 118 x 100 mm
- Weight: 790 g
Usage
This lens is optimized for ultra-wide-angle photography with minimal distortion, making it suitable for professional landscape, architecture, and interior photography where sharpness, clarity, and color accuracy are critical.
