An intuitive system for developing different formats of roll film, the black LAB-BOX from ars-imago is a unique tank that permits both loading and processing of film in complete daylight. Featuring a distinct interchangeable module design, it is possible to quickly switch from 120 to 35mm formats just by changing the loading module. Film can be loaded into the tank in daylight via these modules using an intuitive winding motion that safely pulls the film onto the reel for development, and then this winding motion also permits using either intermittent or continuous agitation methods. When agitating continuously, 10.1 oz of chemistry is required; when agitating intermittently, 16.6 oz of chemistry is required for even development. The tank itself is constructed from plastic and is designed to be as compact and lightweight as possible, measuring 7.2 x 3.9 x 4.9" and weighing 1.6 lb, and the lid's design specifically promotes fast filling and emptying of chemistry for consistent and even results.