Assertion: reflex camera | /r/HasProperty | available in form
Facets:
value: with film as the recording medium
type: OTHER
value: since the 19th century
type: TEMPORAL
Source sentences:
text: Although single lens reflex cameras have been available in various shapes and forms since the 19th century with film as the recording medium, the first commercial digital SLR with an image sensor appeared in 1991.