Where night-time photography seen instantly? (2,1,5)

I believe the answer is:

in a flash

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'instantly?' is the definition.
('in a flash' can be a synonym of 'instantly')

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for in a flash that I've seen before include "Instantly, straightaway" , "Where American detected electricity" , "How lightning appears" , "pictures may be taken" , "Almost instantly" .)

I've seen this clue in The Telegraph.

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