Archived posting to the Leica Users Group, 2002/01/05
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]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