breech-lock

{{Short description|Photographic camera system}}

A breech-lock is a system for mounting camera lenses to camera bodies. The lens is attached to the camera by means of a rotating ring which is used to tighten the lens to the camera by friction.{{Cite web |url=http://photonotes.org/cgi-bin/entry.pl?id=Breechlockmount# |title=Photo Notes.org |access-date=2008-11-12 |archive-url=https://web.archive.org/web/20080625174536/http://photonotes.org/cgi-bin/entry.pl?id=Breechlockmount# |archive-date=2008-06-25 |url-status=dead }}

Other methods for mounting a lens to a camera include bayonet mount or thread mounts. With breech-lock, the body of the lens does not rotate relative to the camera body, whereas with bayonet or screw mounts, the lens is rotated into place.{{Cite web |title=Introduction to Lens Mounts and Lens Adapters {{!}} B&H eXplora |url=https://www.bhphotovideo.com/explora/photography/tips-and-solutions/introduction-lens-mounts-and-lens-adapters |access-date=2023-04-16 |website=www.bhphotovideo.com |language=en}}

Breech-lock comes from the mechanisms that lock closed the breech of breech-loading firearms and artillery. [http://www.freepatentsonline.com/4815356.html Patents List]