Decades if you use Rodinal ;-) -Adam
P. J. Alling wrote: > Any moderately good photo shop will have them and they keep for months. > > David Savage wrote: > > >>If you can source the chemicals, home processing of B&W is quite easy. >> >>Dave >> >> >>On 10/19/06, J and K Messervy <[EMAIL PROTECTED]> wrote: >> >> >> >>>And if you don't process film yourself? >>> >>>I will be taking film to the local pro lab for processing. >>>----- Original Message ----- >>>From: "Shel Belinkoff" <[EMAIL PROTECTED]> >>>To: "Pentax-Discuss Mail List" <[email protected]> >>>Sent: Thursday, October 19, 2006 9:27 PM >>>Subject: Re: Remedial film photography. :) >>> >>> >>> >>> >>> >>>>And, of course, with B&W film, there's a lot more control on the >>>>processing >>>>end, so one can "over expose" the film, or expose for the shadows, and >>>>develop for the highlights, so that there are no blown highlights. So, >>>>for >>>>a Q&D example, you can rate TX @ 200, cut back the standard processing >>>>time >>>>by 25% or so, and get a negative that will print quite well. >>>> >>>>Shel >>>> >>>> >>>> >>>> >>>> >>>> >>>>>[Original Message] >>>>>From: John Francis >>>>> >>>>> >>>> >>>> >>>> >>>> >>>>>Paul Stenquist wrote: >>>>> >>>>> >>>>> >>>>>>Your example is extreme, but most films seem to be slightly overrated >>>>>>in regard to ISO. >>>>>> >>>>>> >>>>> >>>>>Hardly. The ISO testing procedure is well-defined, and rigorously >>>>>followed. If a film says ISO 400 on the box, you can be darn sure >>>>>that it will score 400 on the ISO measurement scale. >>>>> >>>>>But that doesn't mean blindly loading a DX-coded cassette into >>>>>your camera, pointing the camera at a random scene, and letting >>>>>that determine the exposure will produce the results you want >>>>>(even assuming the average brightness of your subject is anywhere >>>>>close to 12% grey). Furthermore, shifting the exposure up the >>>>>scale (which is what you do if you rate the film at slower than >>>>>the box speed) will decrease noise in the shadows at the cost of >>>>>possibly blowing out the highlights, while shifting downwards >>>>>towards under-exposure will generally increase colour saturation. >>>>>It's all a matter of choosing what effect you want, and then >>>>>deciding which film to use, and how to rate it, in order to >>>>>get close to that result. >>>>> >>>>> >>>> >>>>-- >>>>PDML Pentax-Discuss Mail List >>>>[email protected] >>>>http://pdml.net/mailman/listinfo/pdml_pdml.net >>>> >>>> >>>> >>>> >>> >>>-- >>>PDML Pentax-Discuss Mail List >>>[email protected] >>>http://pdml.net/mailman/listinfo/pdml_pdml.net >>> >>> >>> >> >> >> > > > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
