Crossword Genius

Expose oneself to light for the cameraman (5)

Ross

I believe the answer is:

flash

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

'expose' is the definition.
(I know that flash is a type of expose)

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for flash that I've seen before include "Short gleam of light" , "Momentary brightness" , "Camera fitment" , "Twinkling" , "Mo" .)

I've seen this clue in the Sydney Morning Herald.
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