Lens model: Irix 11mm F4 Firefly Lens
Mount: Canon EF
Format: Full frame
Focal Length: 11mm
Equivalent focal length: 11mm Full Frame / 22mm on 1.6x crop APS-C
Angle of view: 126 degrees (diagonal)
Lens construction: 16 elements in 10 groups 4x HR, 3x ASP, 2x ED
Optical stabiliser: No
Maximum aperture: f/4
Minimum aperture: f/22
Aperture blades: 9 rounded blades
Focus system: Manual
Minimum focusing distance: 0.28m
Maximum magnification: -
Dust and moisture resistant: Yes
Other special features: Manual focus with lock function, infinity click, weathersealed design
Included accessories: Lens hood, front lens caps, rear cap, hard lens case
Optional accessories: -
Dimensions: (DxH) 103 x 118mm
Weight: 785g
Filter size: Rear gelatin