His camera captured dodgy operation (4)
I believe the answer is:
scam
'dodgy operation' is the definition.
'scam' can be an answer for 'operation' (I have seen 'Dubious operation' mean 'scam' so perhaps 'operation' could also mean 'scam'). I'm not certain of the 'dodgy' bit.
'his camera captured' is the wordplay.
'captured' indicates the answer is hidden within the clue.
'SCAM' is hidden within 'his camera'.
Can you help me to learn more?
(Other definitions for scam that I've seen before include "Swindle, fraud (colloq.)" , "Dodgy business" , "Hoax" , "Fraudulent scheme, swindle" , "Rip-off" .)