Adorama has the Tokina Opera EF 16-28mm F/2.8 FX as their Deal of the Day for only $599 (Reg $699). This is a great wide-angle zoom for those with Canon full-frame DSLRs or mirrorless cameras.
Tokina Opera EF 16-28mm f/2.8 FX Key Features
Zoom Focal Length: 16-28mm Lens
Maximum Aperture: f/2.8
Image Stabilization Type: No
Lens Series: Tokina FX Series, Tokina Opera Series
Special Features: Aspherical
Tokina Opera EF 16-28mm F/2.8 FX $599 (Reg $699)