Very old ORWO NP22 has been used. Three exposures were taken, the first one with a red filter, the second one with a green filter and the last one with a blue filter. The negatives were scanned and assembled in photoshop. I kind of like the look of this expired ORWO film, good enough to play around with.
Technical info: Pentax 6×7, ORWO NP22 (EI200) in Rodinal 1+200, 90 minutes at 20C. Three agitations every 30 minutes. Epson flatbed scanner and PS3.