As a photographer, my question for the creators of Poser would be, "What is the negative size for the focal length?" There is a formula for figuring out the "normal" focal length of a lens, and it depends on the size of the focal plane and its distance from the convergence point on the lens. Don't ask me what the formula is though... A "normal" lens for a 35mm negative is 50mm, while a "normal" lens for a 16mm negative is something quite different. "Normal," in this case, refers to that which provides an undistorted perspective for a given focal plane. A 35mm "portrait" lens is usually considered to be a lens in the 90 - 110 range. If you're shooting 120 film, a "portrait" lens is usually 80mm. In modern photography, these conventions have pretty much gone out the window, however. Most photographers use a focal length considerably longer than convention dictates, since convention is now stale. A longer focal length compresses details and decreases depth of focus, allowing a better "mental focus" on the model. In the last couple of years or so, many photographers have been bucking the "longer is better" trend and have been using shorter-than-normal portrait focal lengths of 30mm to 60mm to generate a new, fresh effect - allowing for a stretched perspective and deeper fields of focus. Bottom line is not that you should use any particular focal length for all Poser images - rather, you should experiment with the dial. Don't ignore it - take advantage of the effects it can deliver. -sk