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Question: What is the benefit of hypering at 50°C vs 30°C? Is it to save time? Has any testing shown a difference in color shift? In sensitivity? I have surveyed the APML archives and several current web sites for info on hypering recipes (time, temp and pressure) for color negative films. It seems that most APML’s are using 50°C for color neg film. The Lumicon instructions state that the 50°C controller is for open reel, and the 30°C controller is best to “sensitize film left rolled up in its cartridge”. I’m sure that 50°C isn’t bad for color film, or it wouldn’t be popular. I have been hypering using a Lumicon model 300 for several years now at 30°C, with 35mm film in cartridge. I am in the process of testing several currently available films for extended astrophotos exposure times. I would like to make my data relevant to the APML film shooters. Thanks, Don |