Sigma Lenses: Series: The Expanded Guide Series
This book explores the huge selection of Sigma lenses available for both DSLR and SLR cameras and talks about how precise engineering assists photographers in maximizing their
creative abilities by fulfilling the complete potential of the photography equipment. Information is provided on lenses which include macro,, normal, and wide angle
varieties, to unique lenses including aspherical ASP versions that offer extraordinary optical performance in compact dimensions, APO types that diminish color aberrations, to the OS versions that counteract camera shake.
A freelance feature writer, photographer, and author, Andy Stansfield resides in Lancashire, England. He has worked as a freelance photojournalist, as an Consultant for Editorial Publicity and was Deputy Editor for a large UK's leisure organization.