Environmentally conscious film involves no finance expert (9)
I believe the answer is:
economist
'finance expert' is the definition.
'economist' can be an answer for 'expert' (I've seen this before). I'm not certain of the 'finance' bit.
'environmentally conscious film involves no' is the wordplay.
'environmentally conscious' becomes 'eco' (I can't explain this - if you can you should believe this answer much more).
'film' becomes 'mist' (to film over is to mist or fog over).
'involves' is an insertion indicator.
'eco'+'mist'='ecomist'
'ecomist' going around 'no' is 'ECONOMIST'.
Can you help me to learn more?
(Other definitions for economist that I've seen before include "John Maynard Keynes for instance" , "One versed in the management of a country's material resources" , "government adviser, possibly" , "He studies money etc" , "Money supply expert" .)