Easy profits from ruler seen in photos (8)
I believe the answer is:
pickings
'easy profits' is the definition.
(pickings can mean easily made profits)
'ruler seen in photos' is the wordplay.
'ruler' becomes 'king' (king is a kind of ruler).
'seen in' means one lot of letters goes inside another.
'photos' becomes 'pics' (short for pictures).
'king' put inside 'pics' is 'PICKINGS'.
'from' acts as a link.
(Other definitions for pickings that I've seen before include "Returns" , "Perks or spoils" , "pilfered items" .)