Archived posting to the Leica Users Group, 2021/06/10
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Thanks Marty for the answer to the polarizing filter. Ernie > On Jun 9, 2021, at 8:20 PM, Marty Deveney via LUG <lug at leica-users.org> > wrote: > > 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 >> > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information