Canon 20mm 2.8 Lens
Description
The Canon EF 20mm f/2.8 USM is a high-performance, ultra-wide-angle prime lens designed for full-frame and APS-C Canon EOS DSLR cameras. Delivering a dramatic 94° diagonal field of view, this lens mimics the natural breadth of human vision, making it an excellent choice for capturing expansive landscapes, interior architecture, and documentary style reportage. Its optical construction includes aspherical elements to control spherical aberrations and distortion, paired with Super UD (Ultra-low Dispersion) elements to minimize color fringing. Equipped with a ring-type Ultrasonic Motor (USM) and a rear floating focus system, the lens provides exceptionally fast, quiet autofocus alongside full-time manual focus override for precise fine-tuning.
Technical Specifications
| Feature | Specification |
|---|---|
| Focal Length | 20mm (32mm equivalent on APS-C sensors) |
| Lens Mount | Canon EF |
| Maximum Aperture | f/2.8 |
| Minimum Aperture | f/22 |
| Format Compatibility | Full-Frame / APS-C |
| Angle of View | 94° (Diagonal on Full-Frame) |
| Minimum Focus Distance | 9.84 inches (25 cm) |
| Focus Drive Actuator | Ring-type USM (Ultrasonic Motor) with Full-Time Manual Override |
| Filter Diameter | 72 mm |
| Weight | 14.3 oz (405 g) |