Broken image? (8)
I believe the answer is:
snapshot
'broken image?' is the definition.
'snapshot' can be an answer for 'image?' (snapshot is a kind of image). I'm not sure about the 'broken' bit.
'broken image?' is the wordplay.
'broken' becomes 'snap' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'image?' becomes 'shot' (shot is a kind of image).
'snap'+'shot'='SNAPSHOT'
Can you help me to learn more?
(Other definitions for snapshot that I've seen before include "Casual photograph" , "Informal photograph" , "Quick photograph" , "Quickly taken photograph" , "pic" .)