I recently bought some Arista Ultra 100 and 400 4x5 sheet film. I have been disappointed by what appears to be damage in the emulsion -- thick scratches, blotchy areas. I see from other threads that I'm not the only one to experience this. In addition, the 400 doesn't seem to be much faster than the 100. My 100 negatives come out with the density I expect, but the 400 is noticeably thin. This could be because I'm actually underdeveloping it -- I use Pyrocat HD at 1:1:100 for 12 min @ 70F for the 100, and 1:1:80 for 16 min @ 70F for the 400. I'm going to try increasing the development time for 400 to see if that gives me acceptable results.
But.
This exercise has raised a number of questions about repackaged film that I'm hoping some of you can answer. Does anyone know at what point sheet film is notched? It strikes me as odd that the 100 and the 400 have the same notch. I read in a another thread the suggestion that for some film makers the notch does nothing more than provide a reference for the emulsion side. I also read that Arista has in the past repackaged film from a number of manufacturers, including Kodak and Ilford. I think I am correct in thinking that Kodak and Ilford use notches that unequivocally identify the film. Does anyone know what the notches on the Arista film looked like when they were repackaging Kodak or Ilford film? Does Arista (or anyone else who repackages film) get film without notches and then add them? If so, I can easily see how we might end up with film that picked up new flaws in the notching/repackaging process. It would also offer a new opportunity to end up with mis-labeled film (a 100 film mistakenly packaged as a 400, for example).
I'm hoping there are APUG members who have good info about this. My experience so far has me ready to ditch any "brand" that repackages film but maybe my lack of knowledge about this process is creating unnecessary fears. Any insights would be most welcome.
But.
This exercise has raised a number of questions about repackaged film that I'm hoping some of you can answer. Does anyone know at what point sheet film is notched? It strikes me as odd that the 100 and the 400 have the same notch. I read in a another thread the suggestion that for some film makers the notch does nothing more than provide a reference for the emulsion side. I also read that Arista has in the past repackaged film from a number of manufacturers, including Kodak and Ilford. I think I am correct in thinking that Kodak and Ilford use notches that unequivocally identify the film. Does anyone know what the notches on the Arista film looked like when they were repackaging Kodak or Ilford film? Does Arista (or anyone else who repackages film) get film without notches and then add them? If so, I can easily see how we might end up with film that picked up new flaws in the notching/repackaging process. It would also offer a new opportunity to end up with mis-labeled film (a 100 film mistakenly packaged as a 400, for example).
I'm hoping there are APUG members who have good info about this. My experience so far has me ready to ditch any "brand" that repackages film but maybe my lack of knowledge about this process is creating unnecessary fears. Any insights would be most welcome.