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CMS 20 is an ultra-high resolution black and white film with super-fine grain and sharpness which enables virtually grain-free enlargements up to a 2.5m diagonal. It has an ISO rating of between 12 and 25 when developed in Adotech IV. This special developer tames excessive contrast and produces correct grey tones. CMS 20 can be processed in normal developer at a higher ISO80 to produce ultra-hard contrast images.
No other film is sharper, or has finer grain or higher resolution (up to 800 lines/mm at highest contrast). 35mm images look like 4x5".
Uses cubic silver grains which are coated in a single, finest-grain, ultra-thin layer. An anti-halation layer between the emulsion and film base ensures the film's sharpness.
For best pictorial results, it is essential that CMS 20 is developed using Adotech IV developer.