Make use of a film strip (6)
I believe the answer is:
expose
'strip' is the definition.
(thesaurus)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for expose that I've seen before include "Reveal, uncover" , "article on scandal?" , "Bring into view" , "Open to view" , "hazard" .)