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Canon EF 20mm f/2.8 USM Lens Specifications and Measurements
| Specifications | Canon EF 20mm f/2.8 USM Lens | |
|---|---|---|
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| Year Introduced | 1992 | |
| Mounts On | Full-Frame, APS-C | |
| Lenses / Groups | 11/9 | |
| Angle of View: Diagonal | 94° | |
| Angle of View: Horizontal | 84° | |
| Angle of View: Vertical | 62° | |
| Aperture | ||
| Aperture Range - Wide / Long | f/2.8-22 | |
| Number of Aperture Blades | 5 | |
| Rounded Aperture? | ||
| Weight | ||
| Manufacturer Specification Weight | 14.3 oz (405g) | |
| Actual Weight | 13.9 oz (395g) | |
| Lens Hood Weight | 0.9 oz (25g) | |
| In-Use Weight | 14.8 oz (420g) | |
| Size | ||
| Manufacturer Spec Size (DxL) | 3.07 x 2.8” (78 x 71mm) | |
| Measured Size (DxL) | 3.03 x 3.11” (77 x 79mm) | |
| Max Length at Full Extension | 3.11” (79mm) | |
| Internal Zoom? / Extends with Zoom? | N / N | |
| Internal Focusing? / Extends with Focusing? | Y / N | |
| Lens Hood Size (DxL) | 3.79 x 1.61” (96.3 x 40.8mm) | |
| Lens Length with Hood (Min-Max) | 4.56 - 4.56” (115.9 - 115.9mm) | |
| Size of Rings: Focus / Zoom | 0.72” (18.2mm) | |
| Filter Size | 72mm UV ► CP ► | |
| Front Element (Filter Mount) Rotates | N | |
| Focus | ||
| AF Motor Type | Ring USM | |
| Full Time Manual Focus | Y | |
| Focus Ring Rotation | 81° | |
| Focus Limiter? / Focus Limiter Ranges | N | |
| Distance Scale? / Type | Y / Window | |
| Close Focus | ||
| Spec Min Focus Distance (Wide / Long) | 9.84” (250mm) | |
| Tested Min Focus Distance (Wide / Long) | ||
| Maximum Magnification | 0.14x | |
| Magnification Range with 12mm Ext Tube | 0.72-0.6x | |
| Magnification Range with 25mm Ext Tube | n/ax | |
| Features | ||
| Tripod Ring Included? / Removable? | N | |
| Zoom Ring Lock Switch? | N | |
| Lens Hood Included / Model? | N / EW-75II Buy ► | |
| Weather Sealed? / Filter Required? | N | |
| Image Stabilization? / Stops? / Tripod Sensing? | N | |
| Extender Compatible? | N | |
| Case Included? / Type? | N / LP1214 Buy ► | |
| 47.25" x 31.5" Subject Framing Distance | 20mm = 2.53' | |
| 1200mm x 800mm Subject Framing Distance | 20mm = 770mm | |
| Review | Canon EF 20mm f/2.8 USM Lens | |
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