Possibly indecent amount of light in the camera? (8)
I believe the answer is:
exposure
'possibly indecent amount' is the definition.
'exposure' can be an answer for 'amount' (exposure is a kind of amount). I am not sure about the 'possibly indecent' bit.
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for exposure that I've seen before include "could cause one's death" , "O pure sex! (anag.)" , "Disclosure (by camera?)" , "Disclosure - made by a photographer?" , "Laying open to public view" .)