Large format lens
A large format lens is a lens that can be used on a large format camera. These cameras usually cover an area of 4x5 inches or more. The picture taken is then recorded on photographic film, or as a digital image.
Other websites
change- http://www.schneideroptics.com/info/vintage_lens_data/large_format_lenses/ Archived 2005-11-11 at the Wayback Machine
- http://www.kenrockwell.com/tech/4x5.htm
