O'Reilly logo

Canon EOS 40D Guide to Digital Photography by David D. Busch

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Macro Focusing

Some telephotos and telephoto zooms available for the EOS 40D have particularly close focusing capabilities, making them macro lenses. Of course, the object is not necessarily to get close (get too close and you’ll find it difficult to light your subject). What you’re really looking for in a macro lens is to magnify the apparent size of the subject in the final image. Camera-to-subject distance is most important when you want to back up farther from your subject (say, to avoid spooking skittish insects or small animals). In that case, you’ll want a macro lens with a longer focal length to allow that distance while retaining the desired magnification.

Canon makes 50mm, 60mm, 65mm, 100mm, and 180mm lenses with official macro designations. ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required