bpm32
Member
I've been using cibachrome tubes with 4x5 film. I use a machine to roll the tube, although it's a unidirectional roller, so I have to turn the tube around every minute.
After some great suggestions on here, I started using fiberglass screen cut just a bit larger than the film, and sandwiching the film and screen together before sliding it in the tube. (emulsion side up, or away from the screen)
I think this is a great method, but more than occasionally I'll get a grid pattern from the screen left on the backside of the film. This, in turn, translates onto the paper when I'm ready to print the negative.
Has anyone else run into this? Any suggestions for fixing this? Is it due to using a unidirectional roller, and maybe during the presoaking stage (6 mins) the water isn't being agitated enough to clear the halation layer? I almost feel like the cibachrome tube has such a narrow diameter that the film is rolled so tightly against the screen, the water can't get behind there to clear the layer.
Thoughts?
I appreciate any help you can send my way - grid patterns don't add a lot to my photos.
Thanks!
Brian
After some great suggestions on here, I started using fiberglass screen cut just a bit larger than the film, and sandwiching the film and screen together before sliding it in the tube. (emulsion side up, or away from the screen)
I think this is a great method, but more than occasionally I'll get a grid pattern from the screen left on the backside of the film. This, in turn, translates onto the paper when I'm ready to print the negative.
Has anyone else run into this? Any suggestions for fixing this? Is it due to using a unidirectional roller, and maybe during the presoaking stage (6 mins) the water isn't being agitated enough to clear the halation layer? I almost feel like the cibachrome tube has such a narrow diameter that the film is rolled so tightly against the screen, the water can't get behind there to clear the layer.
Thoughts?
I appreciate any help you can send my way - grid patterns don't add a lot to my photos.
Thanks!
Brian