Thumb Score: +1

Available in various mounts Canon, Nikon, Pentax, Sigma and Sony
4.5 stars 650 reviews…. lowest price I have seen

http://www.amazon.com/Sigma-18-25…PDKIKX0DER

18-250mm focal length, only compatible with APS-C DSLRs
• 27-375mm equivalent focal length on APS-C cameras, 28.8-400mm equivalent focal length on Canon APS-C cameras
• Micromotor-type AF motor with full-time manual focusing