Mysterious 4x5 sheet development problem. Am I inverting too hard?

[jnantz]

develop a sheet of film right out of the box.

regarding tray development ... I don't do 1 at a time, I have developed 30 sheets at a time and never an issue.
maybe it's just me I don't know .. I've never had a problem with sheet film development except with 1 bad hanger
and it's the reason I went to trays. I didn't have the time or energy to deal with development BS ...

good luck figuring out the remedy to your problem!
John

[Fred L]

Any way this could be film holder related ? Maybe something is catching/scratching the film. Kind of a stretch I know as I'm not sure how it could affect the short sides vs film sliding under the rails.

[djdister]

Any way this could be film holder related ? Maybe something is catching/scratching the film. Kind of a stretch I know as I'm not sure how it could affect the short sides vs film sliding under the rails.

Yeah, and that is what I meant by mishandling/rough handling of the film, to include to/from the film holder (especially true for the black marks near the notches). I am also wondering why the film edge isn't clear - it looks like partial fogging or just old film.

[paulbarden]

I use a Patterson 3 tank. I alternate between the B's 4x5 reel and the 20th century 4x5 reel.

And this is why I do NOT use tanks for developing sheet film. It's trays or nothing for me.