With this lens, capture elephant (not ant!) in toto? (9)
I believe the answer is:
telephoto
'with this lens capture' is the definition.
(a telephoto lens captures photographs)
'elephant not ant in toto?' is the wordplay.
'not' is a deletion indicator.
'in' is an insertion indicator.
'elephant' with 'ant' taken away is 'eleph'.
'eleph' put inside 'toto' is 'TELEPHOTO'.
(Other definitions for telephoto that I've seen before include "Sort of lens" , "It helps paparazzi get closer" , "Distant shooter" , "Magnifying lens in a camera" , "Kind of lens" .)