Irix 11mm f/4 Review
March 28, 2017
|
Mark Goldstein
|
Specifications
| Image size | 35mm ”Full Frame” | ||
| Focal length | 11mm | ||
| Field of View | 126⁰ (diagonal) | ||
| Focusing range | 0.28 m (0.92 ft) - ∞ | ||
| Focusing type | manual with lock function | ||
| Aperture range | f/4.0 – f/22 | ||
| Aperture control | via camera | ||
| Aperture shape | 9 rounded blades | ||
| Lens construction | 16 elements in 10 groups (4x HR, 3x ASP, 2x ED) | ||
| Front filter thread | N/A | ||
| Rear gelatin filter slot | 30 x 30 mm | ||
| Available bayonet mounts | Canon EF, Nikon F, Pentax K | ||
| Weight | Firefly | Canon | 785 g (1.73 lbs) |
| Nikon | 723 g (1.59 lbs) | ||
| Blackstone | Canon | 815 g (1.80 lbs) | |
| Nikon | 792 g (1.74 lbs) | ||
| Dimensions (D x H) | Firefly | Canon | 103 x 118 mm (4.06” x 4.64”) |
| Nikon | 103 x 115 mm (4.06” x 4.53”) | ||
| Blackstone | Canon | 103 x 118 mm (4.06” x 4.64”) | |
| Nikon | 103 x 115 mm (4.06” x 4.53”) | ||