Photographer Ansel (5)
I believe the answer is:
adams
'photographer ansel' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for adams that I've seen before include "Of untidy appearance" , "Ansel --, US landscape photographer" , "American composer" , "Father and son were American presidents" , "Douglas - (The Hitchhiker's Guide to the Galaxy)" .)