This seems to be a nice substitute for the default 18-55mm Kit lens by Canon-Nikon. Some features of this interesting lens:
- Biggest aperture: f1.8 throughout the zoom range
- Designed for APS-C-Sized Sensors (Cropped sensor DSLRs)
- Compatible with Sigma USB Dock
From Sigma website: "The Sigma USB dock works in conjunction with Sigma Optimization Pro software in order to connect a photographers lens to their personal computer to update firmware and other parameters such as focus, and for the Sports category: Autofocus speeds, focus limiters, and optical stabilization functionality. Updating the firmware can be done via the internet. Sigma Photo Pro is available for Mac and PC computers."