Another advantage of using a long focal length is the smaller view angle. You'll capture less of a noisy background (such as tree branches) providing a simpler final image. The viewer's eye will stay on the main subject and won't get distracted by irrelevant data in the background.
Tim On 12/10/04 13:00, Fred wrote: > Not that I shoot "glamor photography" (<g>), but, when outdoors, I > generally like to use a long lens for portraits. Not only does > doing so make for pleasing enough (to me) facial features (although > some might argue that a moderate telephoto makes for more "natural" > features), but using a long lens (more importantly) also helps make > for more "candid" portraits (since the subject is generally much > less aware of being photographed). Most often I'd be using a > 100-300/4, a 300/4, or a 300/4.5 (typically at about f/8, if I can > get enough light).
