Friday the 13th: The Series (1987)

Season 2: Episode 16

An outcast college film student is obsessed with werewolves. Mercilessly teased by frat boys and rejected by the girls, he stumbles upon a cursed movie camera. When he films someone with it, he sees them being killed by a werewolf through the viewfinder. The victim is then actually killed by a mystically summoned werewolf. According to the camera, when the student kills three victims, he will get his fondest wishes. He does so, and becomes a werewolf himself. Ultimaitely, he tracks the trio back to Curious Goods, where they kill him by strangling him with the camera's film...made out of silver nitrate.