Eyes Behind the Stars
A photographer and his model are on a photo shoot in a forest when they get the feeling they are being watched. The feeling becomes so strong that they decide to cut their session short and leave. Later, when they develop the photos they took, they discover what looks like alien creatures in the background.
Starring Robert Hoffmann, Nathalie Delon, Martin Balsam, Sherry Buchanan, Victor Valente, Sergio Rossi, Mario Novelli, Franco Garofalo, Giovanna De Luca, Bruno Di Luia
Watch "Eyes Behind the Stars" on Amazon released in 1978. It's a science-fiction and thriller movie, and has a rating of 3.9 out of 10 from Imdb which is fairly low for this kind of movie, and is currently only available for purchase or rent.