AT-X 11-20mm f/2.8 PRO DX offers a 17.5-32mm equivalent focal length and features a constant f/2.8 maximum aperture for maintained brightness throughout the zoom range. One P-MO hybrid aspherical element and two glass-molded aspherical element work in tandem to minimize distortions and control various aberrations while three SD ultra-low dispersion elements reduce chromatic aberrations for increased clarity. A multi-layer lens coating has also been applied to further enhance overall light transmission and color accuracy by suppressing lens flare and ghosting. Well-suited to working in a wide variety of situations, this ultra-wide zoom covers an array of wide-angle perspectives while maintaining consistent illumination for working in challenging lighting.
Benefitting the usability, a one-touch focusing clutch permits quick switching between autofocus and manual focus modes, and an internal focusing design maintains the overall length of the lens during use. The medium-torque focusing ring further benefits precise handling by allowing for refined control when manually focusing. Additionally, this lens sees the incorporation of a nine-blade diaphragm, which contributes to a pleasing out-of-focus quality when employing shallow depth of field shooting techniques.
| Autofocus | Yes |
|---|---|
| Dimensions | Approx. 3.50 x 3.62" (89 x 92 mm) |
| Angle of View | 104.34° - 72.42° |
| Elements/Groups | 14/12 |
| Focal Length | 11 - 20mm Comparable 35mm Focal Length: 16.5 - 30 mm |
| Minimum Focus Distance | 11.02" (28 cm) |
| Aperture | Maximum: f/2.8 Minimum: f/22 |
| Maximum Reproduction Ratio | 1:8.62 |
| Diaphragm Blades | 9 |
| Camera Mount | Canon EF |
| Format Compatibility | Canon (APS-C) |
Tokina AT-X 11-20mm f/2.8 PRO DX Lens for Canon EF
