Medium format (film) in the context of "Hasselblad"

A digital camera back is a device that attaches to the back of a camera in place of the traditional negative film holder and contains an electronic image sensor. This allows cameras that were designed to use film to take digital photographs. These camera backs are generally expensive by consumer standards (US$5,000 and up) and are primarily built to be attached on medium- and large-format cameras used by professional photographers.

Sheet film is large format and medium format photographic film supplied on individual sheets of acetate or polyester film base rather than rolls. Sheet film was initially supplied as an alternative to glass plates. The most popular size measures 100 mm × 130 mm (4 in × 5 in); smaller and larger sizes including the gigantic 510 mm × 610 mm (20 in × 24 in) have been made and many are still available today.

In photography, a bellows is the accordion-like, pleated expandable part of a camera, usually a large or medium format camera, to allow the lens to be moved with respect to the focal plane for focusing. Bellows are also used on enlargers. The bellows provides a flexible, dark extension between the film plane and the lens.

120 is a film format for still photography introduced by Kodak for their Brownie No. 2 in 1901. It was originally intended for amateur photography but was later superseded in this role by 135 film. 120 film survives to this day as the only medium format film that is readily available to both professionals and amateur enthusiasts.

Alpa is a designer and manufacturer company which designs high-end medium-format cameras (Website alpa.ch). The current owners bought the company name after the bankruptcy of the original company, known for producing 35 mm SLR cameras.

A toy camera is a simple, inexpensive film camera. Despite the name, toy cameras are fully functional and capable of taking photographs, though with optical aberrations due to the limitations of their simple lenses. From the 1960s onward, there has been interest in the artistic use of such cameras or recreation of this style, both with cameras originally designed for children, and others originally intended as mass-market consumer cameras.

Many professional photographers have used toy cameras and exploited the vignetting, blur, light leaks, and other distortionsof their inexpensive lenses for artistic effect to take award-winning pictures.Toy camera photography has been widely exhibited at many popular art shows, such as the annual "Krappy Kamera" show at the Soho Photo Gallery in the Tribeca neighborhood of New York City. Various publications such as Popular Photography magazine have extolled the virtues of the Diana camera in its own right as an "art" producing image maker. Several books have also featured the work of toy cameras such as The Friends of Photography's The Diana Show, Iowa by Nancy Rexroth, and Angels at the Arno by Eric Lindbloom.

The Holga is a medium format 120 film camera, made in Hong Kong, known for its low-fidelity aesthetic.

The Holga's low-cost construction and simple meniscus lens often yields pictures that display vignetting, blur, light leaks and other distortions. The camera's limitations have brought it a cult following among some photographers, and Holga photos have won awards and competitions in art and news photography. As of July 2017, the camera was in production after being unavailable for two years.

A photographic lens for which the focus is not adjustable is called a fixed-focus lens or sometimes focus-free. The focus is set at the time of lens design, and remains fixed. It is usually set to the hyperfocal distance, so that the depth of field ranges all the way down from half that distance to infinity, which is acceptable for most cameras used for capturing images of humans or objects larger than a meter.

Rather than having a method of determining the correct focusing distance and setting the lens to that focal point, a fixed-focus lens relies on sufficient depth of field to produce acceptably sharp images. Most cameras with focus-free lenses also have a relatively small aperture, which increases the depth of field. Fixed-focus cameras with extended depth of field (EDOF) sometimes are known as full-focus cameras.