The patented optical design uses three aspherical lens elements (two full cast glasses and one P-MO hybrid) to achieve superior contrast and excellent sharpness.
In addition, Tokina uses three SD (super-low Dispersion) glass elements to minimize chromatic aberrations.
This compact lens has a constant F2.8 aperture that also enables autofocus in low light situations. You can thereby quickly switch from automatic to manual focusing, thanks to Tokina's One-touch Focus Clutch Mechanism.
Features of the Tokina AT-X Pro DX 11-20mm F2.8:
- Lens construction: 11 elements in 12 groups
- Closest focusing distance: 0.28 m
- Multi layer coating
- Filter size: 82mm