Quote Originally Posted by Photo-John
Check my review of the Tamron AF28-300mm F/3.5-6.3 XR Di VC lens. They're basically the same lens, except the 18-270mm version is made specifically for APS-C sensor cameras. I was very impressed with the Vibration Compensation image stabilization system, and the range was great. The 18-270mm lens should be smaller and the wider 18mm end will be great for APS-C camera owners.

Tamron AF28-300mm F/3.5-6.3 XR Di VC Lens Review

Hope that helps.
Good review, thanks.