Show a delight in capturing (6)
I believe the answer is:
reveal
'show' is the definition.
(I know that reveal is a more specific form of show)
'a delight in capturing' is the wordplay.
'delight in' becomes 'revel' (I've seen this in another clue).
'capturing' indicates putting letters inside.
'a' inserted inside 'revel' is 'REVEAL'.
(Other definitions for reveal that I've seen before include "Expose or display" , "Expose, divulge" , "Show, uncover" , "Expose or disclose" , "Spill beans" .)