The Black Magic Variable Contrast Liquid Emulsion Kit from Rollei is a gelatin that contains silver halide crystals, which makes the emulsion light sensitive. This emulsion can be applied to many materials like paper, canvas, wood, glass, and metallic surfaces. The bonding process of the emulsion improves when the gelatin additive is brushed onto the surface as a primer, and it also acts as an isolator for metallic surfaces.

Once the emulsion dries, it becomes a variable contrast emulsion that can be controlled through the use of filters. Meanwhile, use RPN Print Neutral developer to develop your exposures, which produces black cold tones with high edge sharpness on the material. A combination of RCS Citrin stop bath and RBM5 hardener makes the emulsion stronger and scratch-resistant and stops the development of the image. The image is then made permanent on the material when RXN Fix Neutral is used.