Sigma Lens Links
The Sixth Stage of Grieving: Buying a New Canon 50d Digital SLR - Wired News
Sigma Buys Fovean - Wired News
Camera and Lens Maker Sigma Buys Sensor Vendor Foveon - EDN.com
Sony 55-200mm f/4-5.6 DT AF: Lens Test - Popular Photography Magazine
Sigma 50mm f/1.4 EX DG HSM AF: Lens Test - Popular Photography Magazine