Ammonite Press "The Expanded Guide, Sigma Lenses", Softcover Book by Andy Stansfield, 232 Pages

This fully illustrated Expanded Guide explores the huge range of Sigma lenses for digital SLR cameras and explains how precision engineering helps photographers to maximise their creativity by fulfilling the full potential of the equipment.

Information is given on lenses from the standard, macro and wide angle types, to special lenses from aspherical ASP models that give high opticalperformance in a compact size, APO types that minimize colour aberration, to theOS range that compensates for camera shake.

Andy Stansfield is a freelance photographer, feature writer and author based in Lancashire, England. In addition to being a freelance photojournalist, he has inthe past worked as an Editorial Publicity Consultant and as Deputy Editor for one of the UK's largest leisure organizations.