I have used 30 to 40 rolls of EFKE R25 so far. R25 and R50 have a reduced sensibility for red light. R25 ist pretty shard and has a fine grain. I like the tonal scale of R25 developed in Emofin, but the quality control by the manufacturer is rather bad. Some rolls showed scratches and dust particles on the emulsion.(posted 8979 days ago)