• Adjust apertures, shutter speeds, and camera focus based on a combination of factors such as lighting, field depth, subject motion, film type, and film speed. • Determine desired images and picture composition; and select and adjust subjects, equipment, and lighting to achieve desired effects. • Develop and print exposed film, using chemicals, touchup tools, and developing and printing equipment, or send film to photofinishing laboratories for processing. • Enhance, retouch, and resize photographs and negatives, using airbrushing and other techniques. • Estimate or measure light levels, distances, and numbers of exposures needed, using measuring devices and formulas. • Photograph subject material to illustrate or record scientific/medical data or phenomena, using • Review sets of photographs to select the best work. • Test equipment prior to use to ensure that it is in good working order. • Consult with staff and study assignments to determine project goals, locations, and equipment needs. • Engage in research to develop new photographic procedures and materials. • Manipulate and enhance scanned or digital images to create desired effects, using computers and specialized software. • Mount, frame, laminate, and/or lacquer finished photographs. • Perform maintenance tasks necessary to keep equipment working properly. • Produce computer-readable, digital images from film, using flatbed scanners and photofinishing laboratories. • Scan photographs into computers for editing, storage, and electronic transmission. • Employ a variety of specialized photographic materials and techniques, including infrared and ultraviolet films, macro-photography, photogrammetry and sensitometry.