Type of photograph (5-2)
(Other definitions for close-up that I've seen before include "Short-range photo" , "Photograph or film taken at short range" , "Detailed photograph of couples" , "Photo giving detailed view, as of actor" , "Near photograph" .)
'type of photograph' is the definition.
This is the entire clue.
(Another definition for time exposure that I've seen is " Opposite of snapshot?".)
(Other definitions for selfie that I've seen before include "Personal photo" , "21 [PHOTO]" .)