I saw a torrent the other day that was a bunch of images of a young man (high school or college) who was on a competitive water sports team. None of the photos were nude and all of them were taken in public around the pool where there is no expectation of privacy, but it still seemed inappropriate to me.
One photo in a collection of photos of different men in Speedos would be okay, but a collection of photos of just the one young man is creepy and wrong even if it is not illegal as he was obviously unaware the photos were being taken and did not give consent to have them taken or distributed on the internet.
I think I know the collection you mean–if the guy was wearing grey speedos. I agree that, while not illegal, there's a "creepiness" factor there that is uncomfortable.
On the OP's topic, I do enjoy spying on guys, but "real time," rather than recording it. I used to live in a cluster of high-rises, where it was easy to see in the windows of other apartments. Some guys would walk around naked, jerk off, and/or have sex with the lights on and the draperies open. Some were consciously exhibitionist, as they would walk right up to the window and look out, They had to know that they could be seen. Others probably didn't know how clearly they could be viewed.
The only "story" coming out of this is unfortunately rather bland: A guy across the street, a 20-ish blond twink, could occasionally be seen giving blow jobs to other guys. One day as I was leaving the local gym, I could see that he was just ahead of me in the check-out line. I knew we would be walking in the same direction, so I started up a conversation with him. I was hoping that it would turn into an invitation, but no such luck. Later on that evening, though, I could see that he had another mouthful ;D