Quote Originally Posted by RobertV View Post
You have also Orthopan films, Acros 100 (Fuji), Efke 25, Retro 100 TONAL (Rollei-Maco). At least iso 100 and in daylight you can use the TONAL for iso 200 speed with a speed enhanced developer.
This has come up several times. People have posted the spectral curves of the film and my observation is that these are just poorly sensitized pan films with low red sensitivity. They are red sensitive, just not as much as other films, so the manufacturers had to come up with a name to describe them.

PE