Lenses

Ten years after the publication of Infrared Optics and Zoom Lenses, this text is still the only current publication devoted exclusively to infrared zoom lenses. This updated second edition includes 18 new refractive and reflective infrared zoom systems, bringing the total number of infrared zoom optical systems to 41 systems. Other additions include a section for focal plane arrays and a new closing chapter specifically devoted to applications of infrared zoom lenses. Coverage of the wavelength region has been expanded to include the near infrared. Additional topics include the importance of principal planes, athermalization by means of computer glass substitution, and global optimization of zoom lenses.

Many of the creative options available to a photographer hinge on an in-depth understanding of lenses. In Foundations of Photography: Lenses, Ben Long shows how to choose lenses and take full advantage of their creative options. The course covers fundamental concepts that apply to any camera, such as focal length and camera position, and shows how to evaluate and shop for DSLR lenses. The second half of the course focuses on shooting techniques: controlling autofocus, working with different focal lengths, and managing distortion and flare. The course also examines various filters and contains tips on cleaning and maintaining lenses.

Join photographer, author, and teacher Ben Long on location in San Francisco as he explores the creative options provided by the kinds of lenses and lens accessories that don't always make it into most camera bags.

Are you ready to go beyond the basics with your digital SLR camera but are unsure which interchangeable lens or two to buy and more importantly, how and when to use each lens? "David Busch's Quick Snap Guide to Using Digital SLR Lenses" offers focused, concise information and techniques on how to use different lenses to take great photographs.