Hold it for the photographer (4)
I believe the answer is:
pose
'hold' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
'it for the photographer' is the wordplay.
'it' becomes 'e' ('e' can mean 'electronic' which is similar to 'IT').
'for' means one lot of letters go next to another (I've seen this in other clues).
'the photographer' becomes 'pos' (I can't justify this - if you can you should give a lot more credence to this answer).
'e' after 'pos' is 'POSE'.
Can you help me to learn more?
(Other definitions for pose that I've seen before include "Pretend to be somebody else" , "Pretend; model" , "Sit; attitude" , "Assume an attitude (for photo etc)" , "Model - ask (question)" .)