The Acratech long lens tripod head is designed to solidly support super telephoto lenses such as 600 f4s and to provide ease of use, freedom of movement and weigh less than 1 lb. When the Long Lens Head is used with the camera body attached directly to the head most all camera positions are accessible. The Long lens head should not be considered as a replacement for a ballhead for general photography but it does allow the photographer who is primarily shooting long lenses, to not be required to carry a second tripod head into the field for occasional shorter lens shots.