The Tamron AF 18-270mm f/3.5-6.3 Di-II VC LD Aspherical (IF) Macro Lens is a 15x 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. 27-405mm in 35mm format. Designed as an "all-in-one" lens, it will meet almost all photographic opportunities without changing lenses.