Businesses in this category sell equipment for photography, wildlife observation and astronomy. Camera ranges may include compact, mirrorless and digital single-lens reflex models, as well as lenses, flashes, tripods, memory cards, batteries, bags and lighting equipment. Some retailers also stock film cameras, film and darkroom supplies, and may offer second-hand or refurbished equipment alongside new products. Binoculars and telescopes are available in different sizes and specifications for uses such as birdwatching, travel, sailing and stargazing. Staff may help customers compare features including magnification, lens size, focusing, image stabilisation and compatibility with accessories. Services can include camera or lens cleaning and repairs, sensor cleaning, equipment hire, film processing, printing and transferring photographs to digital formats. The range of services varies between businesses, and specialist repairs may be handled by an external technician.