Photographers capturing her bum, possibly (7)
I believe the answer is:
perhaps
'possibly' is the definition.
(synonyms)
'photographers capturing her bum' is the wordplay.
'photographers' becomes 'paps' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'capturing' is an insertion indicator.
'bum' indicates anagramming the letters (bum can mean faulty or wrong).
'her' anagrammed gives 'erh'.
'paps' placed around 'erh' is 'PERHAPS'.
Can you help me to learn more?
(Other definitions for perhaps that I've seen before include "Possibly, maybe" , "Could be, maybe" , "Not necessarily" , "Conceivably" , "Possibly but not certainly" .)