4 Sides And Dancing Rock: Scala scans. Scala was the only B&W slide film ever made. 25 years ago, Holland Photo worked with me on printing some of my Big Bend work, even though no print paper was ever produced for this film. After much trial and error--we had to use paper made for positive images (slides), and it eerily produced faint coloring that were the color of the clothing of my backpacking buddy's shirt--they produced the stunning images this film produced.