Answer:
I think it is better for people to learn on their own because then they already have experience but it's also good to learn from other people's mistakes
The main idea is the evasive beauty of nature, but also purposeful human intrusion upon nature. The clues are: a man who went to the wilderness for the sheer pleasure of capturing a beautiful natural scene of a wild creature; the deer's mistrust and frightfulness. Eventually, both of them, the man and the deer, got away - the deer ran into safety, and the man went back to civilization with a photo of the deer.
Yes, it is about a photo that is very important to the author, for the reasons I've explained.
The last line implies that the author had captured and tamed the wilderness, if only for a single moment.
