Crossword Genius

Promote the redesigned camera accessory (10)

Ross

I believe the answer is:

photometer

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'camera accessory' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe there's a link between them I don't understand?

'promote the redesigned' is the wordplay.
'redesigned' indicates anagramming the letters.
'promote'+'the'='promotethe'
'promotethe' is an anagram of 'PHOTOMETER'.

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I've seen this clue in The Times.
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