Sigma 18-35mm f/1.8 DC HSM Art Lens (Choose Type) $599 @ B&H Photo w/ Free Shipping

Canon
Nikon
Pentax
Sony Alpha
Specs:
Aperture Range: f/1.8-16
Fast Constant Maximum Aperture
Designed for APS-C-Sized Sensors
35mm Equivalent Focal Length: 28.8-56mm
Hyper Sonic AF Motor
Internal Focusing and Zoom Design
Four Aspherical & 5 SLD Glass Elements
Super Multi-Layer Coating
Canon EF Lens Mount
Compatible with Sigma USB Dock