I know many people will immediately ask why I would move away from the convenience of roll film without stepping up to 4x5 or even smaller 6x8cm sheet film, but my next project involves single frames of 35mm film...if I can figure out how to develop them. I've read that film can be developed in trays under a safe light, but then I learned that it's only ortho film under a red safe light. If at all possible I plan to use Rollei ATP, ADOX CMS 20, or some other slow panchromatic film. I'm not necessarily opposed to ortho film, but I've never used it. Maybe I'll change my mind after I develop my first roll of Rollei Ortho 25. My next idea was to cut strips of about 2 frames (even though I'll only expose one) and then roll the strips onto a spool, but that failed miserably in my test. Each strip overlaps the previous one rather than pushing it along the spool. So, if I stick with panchromatic film is my only option to develop using trays in absolute darkness?