Snapper arrived with artist (6)
I believe the answer is:
'snapper' is the definition.
(I've seen this in another clue)
'arrived with artist' is the wordplay.
'arrived' becomes 'came' (come can mean to appear or arrive).
'with' means one lot of letters go next to another.
'artist' becomes 'RA' (Royal Academician, member of Royal Academy of Arts).
(Other definitions for camera that I've seen before include "private chamber" , "Source of pictures" , "Picture taker" , "TV studio item" , "Image recording apparatus" .)