Archived posting to the Leica Users Group, 2002/01/06
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Not only did Kodak recommend more exposure they called for more development as well. I came across a data sheet from about 1940 that recommends developing Super-XX for 24 minutes and Panatomic-X for 20 minutes in D-76 straight at 65F! Mike D - ----- Original Message ----- From: <dante@umich.edu> To: <leica-users@mejac.palo-alto.ca.us> Sent: Saturday, January 05, 2002 11:54 AM Subject: Re: [Leica] shutterbug...real film speeds... > > I would recommend taking a look at the old Kodak materials, when the speed > measurement was less dependent on using the toe. Some examples (from > memory). > > Verichrome pan - 64 > Plus-X - 50 > Tri-X - 200 > > Giving one stop extra exposure doesn't hurt in any event. > > Dante > > > From: Henning Wulff <henningw@archiphoto.com> > > Reply-To: leica-users@mejac.palo-alto.ca.us > > Date: Fri, 4 Jan 2002 17:42:07 -0800 > > To: leica-users@mejac.palo-alto.ca.us > > Subject: Re: [Leica] shutterbug...real film speeds... > > > > At 7:00 PM -0600 1/4/02, John Straus wrote: > >> on 1/4/02 5:32 PM, Henning Wulff at henningw@archiphoto.com wrote: > >> > >>> That's exactly what I have found - about 2/3 stop slower, but finer > >>> and a bit more detail in the toe and highlights. I use it more like a > >>> very fine-grained FP4 rather than like a T-grain film. Anyway, Acros > >>> has permanently retired FP4+. > >> > >> Where can you find info on the 'real' speed of the films out there? It seems > >> a lot of companies have inflated #'s so to speak. Foe example Fujis site > >> doesn't seem to have any useful info unless I'm not looking in the right > >> place...? > > > > You gotta do your own. This is developer and processing as well as > > subject, filtration, how you meter and how your meter is adjusted > > dependent, as well as nominal ISO dependent. The manufacturers test > > according to proper standards and thus their stated speeds are real > > and accurate, it's just that their standards are going to be > > different than yours - guaranteed! > > > > -- > > * Henning J. Wulff > > /|\ Wulff Photography & Design > > /###\ mailto:henningw@archiphoto.com > > |[ ]| http://www.archiphoto.com > > -- > > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html > > -- > To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html > - -- To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html