
1) Photography equipment
Found on
https://www.crosswordclues.com/clue/film-holder

A film holder is a device that holds one or more pieces of photographic film, for insertion into a camera or optical scanning device such as a dedicated film scanner or a flatbed scanner with film scanning capabilities. The widest use of the term refers to a device that holds sheet film for use in large format cameras, but it can also refer to var...
Found on
http://en.wikipedia.org/wiki/Film_holder

(from the article `photography, technology of`) ...between 4 5 inches and 8 10 inches. A front standard carries interchangeable lenses and shutters; a rear standard takes a ground-glass screen ...
Found on
http://www.britannica.com/eb/a-z/f/25

A light-tight, removable device for holding film on many medium-format. This allows the photographer to preload the film so he can quickly change rolls of film
Found on
http://www.encyclo.co.uk/local/21048

A light-tight, removable device for holding film on many medium-format. This allows the photographer to preload the film so he can quickly change rolls of film.
Found on
http://www.rodsmith.org.uk/photographic%20glossary/rods%20photographic%20gl
No exact match found.