While I never agreed with his politics, besides photography, Goldwater and I shared another interest - ham radio. He was very highly regarded by amateur radio operators - even those opposed to him fantasized about a full-size yagi antenna on top of the White House. Goldwater was an active ham throughout his life and during the Viet Nam War (a time well before internets, global telephoning etc.) was very active "running phone patches" so that troops could contact their families via a ham radio/telephone interconnect.
As to his photography, I understand he did a number of aerial surveys of the Grand Canyon in the 1950's. This was when much of it was still unexplored. And I believe Goldwater is credited with "discovering" at least one major rock formation in what was an inaccessible part by shooting the same area at different times of the day to "follow the sun".