Tamron 18-270mm f3.5-6.3 Di II VC (Canon)
The 18-270 by Tamron features an extremely wide angle and a telephoto zoom all in one lens. It has a maximum aperture range from 3.5-6.3 depending on your zoom. This "all-in-one" lens features Tamron's PZD ultrasonic motor for accurate autofocusing while keeping the lens light and short. This lens is designed for DSLRs with cropped sensors. The Vibration Compensation in this lens is very helpful at keeping images still, especially when zoomed to 270mm. The 18-270 is available for both Canon and Nikon DSLRs.