Tamron’s new SP AF11-18mm F/4.5-5.6 Di-II LD Aspherical (IF) lens is the company’s first ultra-wide zoom lens designed exclusively for DSLR cameras with ‘APS-C size’ sensors. Available with Canon, Konica Minolta and Nikon mounts, it is surprisingly compact. This is largely due to a new design that uses a large-aperture glass-moulded aspherical element, hybrid aspherical elements and elements made from high index/high dispersion glass and low dispersion optical glass. You pay a premium for these high-tech materials but the overall performance of this lens fully justifies its price and it remains more affordable than similar lenses from the camera manufacturers.
