Crossword Genius

Picture expert following glaze with polish (4,4)

Ross

I believe the answer is:

film buff

I'm a little stuck... Click here to teach me more about this clue!

'glaze with polish' is the definition.
I know nothing about this answer so I can't tell whether this works.

'picture expert following' is the wordplay.
'picture' becomes 'film' (synonyms).
'expert' becomes 'buff' (buff can mean an expert or aficionado).
'following' means one lot of letters go next to another.
'film'+'buff'='FILM BUFF'

Can you help me to learn more?

(Another definition for film buff that I've seen is " Movie expert".)

I've seen this clue in The Independent.
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