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Lens Description: Ultra-wide-angle lens for serious applications. Easy to hold and carry at 14.3 oz. (405g). Floating rear focusing system. Sharp images are obtained at all subject distances
Canon EF 20mm f/2.8 USM Specifications
| Lens Specifications | |
|---|---|
| Lens Type | Prime Lens |
| Focal Length | 20mm |
| Mount Type | Canon EF |
| Format | Full Frame / FX |
| Compatible Format(s) | 35mm Film / Full-Frame Digital Sensor Canon (APS-C) |
| Compatible with Teleconverters | No |
| Maximum Reproduction Ratio | 1:7.1 |
| Image Stabilizer (Image Stabilization) | No |
| Aperture Information | |
| Aperture Ring | No |
| Maximum Aperture | f/2.8 |
| Minimum Aperture | f/22 |
| Maximum Angle of View (Full Frame format) | 94ยบ |
| Optical Information | |
| Lens Elements | 11 |
| Lens Groups | 9 |
| Diaphragm Blades | 6 |
| Extra-Low Dispersion Glass Elements | 11 spherical elements |
| SWC (SubWavelength Structure Coating) | No |
| Super Spectra Coating | No |
| Focus Information | |
| Focus | Autofocus |
| Built-in Focus Motor | Yes |
| UltraSonic Motor (USM) | Yes |
| Rear Focusing | Yes |
| Minimum Focus Distance | 0.25m |
| Distance Information | Yes |
| Filter Information | |
| Filter Size | 72mm |
| Accepts Filter Type | Screw-on |
| Physical Characteristics | |
| Weather / Dust Sealing | No |
| Mount Material | Metal |
| Tripod Collar | No |
| Dimensions | 78 x 71mm |
| Weight | 405g |
| Other Information | |
| Available in Colors | Black |
Lens Construction
MTF Chart
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