The Tamron AF 18-200mm f/3.5-6.3 XR Di-II LD Aspherical (IF) Macro Lens made for the Nikon SLR system incorporates a motor built into the lens itself, which gives it the capability to autofocus with all Nikon DSLR cameras (including the D40 and D40x). In addition, with the motor built into the lens, focusing will be quieter and more responsive.
The 18-200mm f/3.5-6.3 XR Di-II is a high power zoom lens designed exclusively for digital SLR cameras using the more compact (APS-C) digital size image sensors. The focal length of this lens is equivalent to approx. 28-300mm in 35mm format.
This product comes with a 1 year limited warranty.