“LAZER adds green and blue glowing lines to your photographs. The effect includes the sprocket holes, so it‘s great to try LAZER with cameras that also expose the sprocket holes. 
Try shooting a full roll in landscape format: When you get the pictures printed the lines will connect successive frames throughout the entire roll making a great panorama to decorate your walls with! 
Careful with strong underexposure as the effect might dominate your image.”

via revolog.com