Filmmaker misrepresented Taichang Emperor (15)

I believe the answer is:

cinematographer

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

'filmmaker' is the definition.
I can't tell whether this defines the answer.

'misrepresented taichang emperor' is the wordplay.
'misrepresented' indicates an anagram.
'taichang'+'emperor'='taichangemperor'
'taichangemperor' with letters rearranged gives 'CINEMATOGRAPHER'.

Can you help me to learn more?

(Other definitions for cinematographer that I've seen before include "Film-maker" , "Film maker" , "Pictures he makes" , "Possibly a "pic-generator"" .)

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