Besides large size, one of the biggest reasons for using sheet films is the ability to taylor each sheets exposure and individualy process each sheet. C-41 film is difficult to do that with. C-41 films are really soft and don't have the same characteristics of normal silver films when it comes to printing with them. I tried them but gave up in favor of Tmax and Delta 100. I use TechPan when I want really sharp negs with full tonal range.(posted 8450 days ago)