Hi Wolfram,(posted 8798 days ago)I experimented with 24x30 cm Macolith film. I am aiming at using it for cyanotypes and other antique processes. That means I need long-scale, contrasty negatives, and a D_max of more than 2 would be great. It also implies that I need negatives the size of the intended prints. Lith film is commercially available in many, even big, formats, it has a high D_max, and its slow speed and blindness to red light make it easy to handle in the darkroom. I may have to consider conventional cut sheet pan film for my purpose if the lith film refuses to produce the results I need, or the chemicals are too expensive, but I will first try a few ideas I got here.