Sigma 18mm - 200mm f/3.5-6.3 DC OS HSM AF Lens Kit, for Nikon Digital SLR Cameras. with Tiffen 72mm UV Wide Angle Filter, Professional Lens Cleaning Kit

Exclusively designed for use with digital SLR cameras featuring APS-C size imagesensor.High zoom ratio 11:1.Compact, Lightweight and Durable construction with diameter of 79mm (3.1"), length of 100mm (3.9") and weight of 610g./21.5oz.Lens has Metal Mount.Minimum focusing distance of 45cm (17.7") at all focal lengths.
Product Description Fully compatilbe with All Nikon Digital SLR cameras including the D40 and D40x. Compact, Lightweight Superzoom lens, with high zoom ratio 11:1 The

Source: Digital Camera and Video Store...