Crossword Genius

Hope to let out type of camera (9)

Ross

I believe the answer is:

telephoto

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'type of camera' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps you can see a link between them that I can't see?

'hope to let out' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'hope'+'to'+'let'='hopetolet'
'hopetolet' with letters rearranged gives 'TELEPHOTO'.

Can you help me to learn more?

(Other definitions for telephoto that I've seen before include "Long-distance lens" , "Kind of lens" , "Distant shooter" , "Sort of lens" , "Magnifying lens in a camera" .)

I've seen this clue in The Times.
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