There was a couple of us photographers a number of years ago doing some art nude on a farm.
I was very fortunate that when the horse decided to lower its head to eat some grass, I was the only one ready to take the shot so no-one else caught the same image.
This was shot on a 41°c day in the very harsh midday sun but was controlled by a studio strobe with a battery pack and 700mm beauty dish.
DAMN !! Excellent shot !!