Once accepted, a large number of new submissions are generally required each year. Photographers frequently have their photos placed on CD's for this purpose. Commercial and industrial photographers take pictures of such subjects as manufactured articles, buildings, livestock, landscapes, and groups of people. Their work is used in a wide variety of mediums, such as reports, advertisements, and catalogs. Industrial photographers use photographs or videotapes for analyzing engineering projects, publicity, or as records of equipment development or deployment, such as the placement of an off-shore oil rig.
Automobile manufacturers hire photographers every year to publicize their new models.
Companies use photographs in publications to report to stockholders or to advertise company products or services. This photography frequently is done on location. Scientific photographers provide illustrations and documentation for scientific publications, research reports, and textbooks. They usually specialize in a field such as engineering, medicine, biology, or chemistry. Some use photographic or video equipment as research tools.