Took out my old Canon AT-1 a few times recently and shot my first roll of analog film since probably back in the 1990's when I was a kid. Sun flare seemed to be an issue for the old lenses, in some shots it made a nice rainbow effect, in others the flare pretty much ruined the shot like in the portrait of my wife which would have made a great print but not even Photoshop magic could fix it, using a lens hood should help in these situations next time.