Yosemite photographer (5)
I believe the answer is:
adams
'yosemite photographer' 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 "Second and sixth US president" , "Douglas - (The Hitchhiker's Guide to the Galaxy)" , "Richard --, Watership Down author" , "Gaolers" , "Sort of apple" .)