Steamy bit of photography? (3)
I believe the answer is:
hot
'steamy' is the definition.
(both can mean erotic)
'bit of photography?' is the wordplay.
'bit of' indicates the answer is hidden within the clue.
'HOT' can be found hidden inside 'photography'.
(Other definitions for hot that I've seen before include "Stolen - sought after" , "recently stolen" , "Torrid" , "Very popular" , "Sultry or angry" .)