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Irix 11mm f/4 Firefly Lens Specifications and Measurements
| Specifications | Irix 11mm f/4 Firefly Lens | |
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| Year Introduced | 2017 | |
| Mounts On | Full-Frame, APS-C | |
| Lenses / Groups | 16/10 | |
| Angle of View: Diagonal | 126° | |
| Aperture | ||
| Aperture Range - Wide / Long | f/4.0-22 | |
| Number of Aperture Blades | 9 | |
| Rounded Aperture? | Y | |
| Weight | ||
| Manufacturer Specification Weight | 25.8 oz (730g) | |
| Actual Weight | 27.4 oz (775g) | |
| In-Use Weight | 27.4 oz (775g) | |
| Size | ||
| Manufacturer Spec Size (DxL) | 4.06 x 4.65” (103 x 118mm) | |
| Measured Size (DxL) | 4.04 x 4.68” (103 x 118.9mm) | |
| Max Length at Full Extension | 4.68” (118.9mm) | |
| Internal Focusing? / Extends with Focusing? | Y / N | |
| Lens Hood Size (DxL) | 4.04 x 1.85” (102.7 x 47.1mm) | |
| Lens Length with Hood (Min-Max) | 4.68 - 4.68” (118.9 - 118.9mm) | |
| Size of Rings: Focus / Zoom | 1.22” (31.1mm) | |
| Filter Size | ||
| Front Element (Filter Mount) Rotates | N | |
| Focus | ||
| AF Motor Type | ||
| Full Time Manual Focus | ||
| Focus Ring Rotation | 158° | |
| Focus Limiter? / Focus Limiter Ranges | ||
| Distance Scale? / Type | Y / Printed | |
| Close Focus | ||
| Spec Min Focus Distance (Wide / Long) | 10.83” (275mm) | |
| Tested Min Focus Distance (Wide / Long) | 9.8” (249mm) | |
| Maximum Magnification | 0.08x | |
| Features | ||
| Tripod Ring Included? / Removable? | N | |
| Zoom Ring Lock Switch? | N | |
| Lens Hood Included / Model? | Y / Integrated | |
| Weather Sealed? / Filter Required? | Y / | |
| Image Stabilization? / Stops? / Tripod Sensing? | N | |
| Extender Compatible? | N | |
| Case Included? / Type? | Y / Soft Lens Pouch Buy ► | |
| 47.25" x 31.5" Subject Framing Distance | 11mm = 1.62' | |
| 1200mm x 800mm Subject Framing Distance | 11mm = 495mm | |
| Review | Irix 11mm f/4 Firefly Lens | |
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