Designed for both film and digital SLRs is a new 170-500mm lens fresh out in the UK from Sigma.

Priced £629.99 the 170-500mm f/5-6.3 APO DG features three Special Low Dispersion (SLD) elements and an aspherical lens to help reduce chromatic aberration and improve image quality.

The 13-element-in-11-group optic weighs 1,345g and is available in Sigma, Canon, Nikon, Pentax and Konica Minolta AF mounts. It measures 92.5x232mm (diameter x length).

For details call Sigma Imaging UK on 01707 329999.