Familiar name for a photo finish (4)
I believe the answer is:
matt
'finish' is the definition.
(I have seen 'Dull finish' mean 'matt' so perhaps 'finish' could also mean 'matt')
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for matt that I've seen before include "book" , "Without a shine, dull" , "Dull, lustreless" , "- Lucas (Little Britain)" , "Lacking a shine" .)