Archived posting to the Leica Users Group, 2021/06/09
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Yes, the 13358 is a linear polarising filter. It is hard to specify the characteristics of Caffenol because there is so much variation from mix-to-mix and with different brands of coffee etc. I found it exhausted very quickly particularly when the pH was mildly rather than strongly alkaline, which would tend to exhaust more quickly, so it may help prevent over development. But I couldn't get it to behave consistently and stopped experimenting, because I see no point in having a nice camera and valuable film and putting it in unpredictable chemicals. Marty On Thu, Jun 10, 2021 at 11:35 AM ernest nitka via LUG <lug at leica-users.org> wrote: > This is a multi part question. I was out shooting my R7 and was getting > bad readings that would normally be 3-4 stops overexposed when in 'A' mode > but not in 'P' mode. While still shooting I figured out what the problem > was - taking the polarizing filter off corrected the problem. I assume > that it was a linear polarizer and not circular. Can anyone verify that A > leica 13358 is linear? > > So home I went and I decided to try Caffenol developing for 15 minutes. > All the frames came out including those that should've been way over > exposed. Is Caffenol for 15 minutes like stand development? Where films of > different exposure settings will come out OK/ > > Sorry for the convoluted question > > Ernie Nitka > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information >