Not wishing to become a shooting target! (6-3)
I believe the answer is:
camera-shy
But I can't explain it at all! Could you help me understand?
(Other definitions for camera-shy that I've seen before include "Chaser may be apprehensive of having photo taken - bashful?" , "Reluctant to be photographed" , "Afraid of the lens" , "Unwilling to be photographed" .)