Maybe, but I haven't taken it that far. My factor is '6', and if I need a little less contrast I may go to '4'. If I need more contrast, I go to '8', but changing the factor does also affect highlight exposure, which makes this procedure a bit cumbersome and demotes it to just a minor 'tweak' rather than a regular routine. With VC papers, one is better off changing the filtration and keeping the factor fixed. Regards Ralph W. Lambrecht On 10/19/04 2:37 AM, "J.R. Stewart" <jrstewart@xxxxxxxxxxxx> wrote: > Thanks, Ralph. My factor is closer to 5-6. For instance, I 'normally' start > seeing midtones at around 45-50 seconds and I pull it out of developer at > 240 seconds. I just didn't recognize the term.. now I know. Thanks. > > I think a practice of adjusting your development factor while printing takes > some experience and probably some testing, doesn't it? Do you use a > methodical approach for adjusting your factor? For instance, does reducing > your factor from 6 to 4 consistently produce an increase of 1/2 paper > grade?? Can one standardize this procedure? > > Jim > > > > ----- Original Message ----- > From: "DarkroomMagic" <info@xxxxxxxxxxxxxxxx> > To: "PureSilverNew" <pure-silver@xxxxxxxxxxxxx> > Sent: Monday, October 18, 2004 5:57 PM > Subject: [pure-silver] Re: Polycontrast Paper Performance / Cold lite > > >> RC papers need to be developed-out. Pulling them prematurely results in >> weak >> blacks and uneven development. FB papers, on the other hand, can be >> developed from 2 to 6 or 8 minutes with slightly increasing contrast. >> >> Factorial development is not covered in my book (yet), but it is covered >> briefly in AA's 'The Print'. Basically, you measure the time until you see >> the mid-tones developing. Then, multiply that time by a factor of 4 - 8 (I >> use '6') to get the total development time. Apply this consequently, and >> you >> can make up for temperature and developer exhaustion changes, always >> getting >> consistent contrast. It's a proven method that only works for FB papers. >> >> >> >> >> >> Regards >> >> >> >> Ralph W. Lambrecht >> >> >> >> >> On 10/18/04 8:06 PM, "J.R. Stewart" <jrstewart@xxxxxxxxxxxx> wrote: >> >>> Remind me, Ralph, please: "factor of factorial development"? And why does >>> it >>> apply only to fiber based paper? I don't recall seeing that described >>> anywhere... (not in your book is it??--if so just tell me and I'll find >>> it.). >>> >>> In a related post I made this morning, I reported a significant >>> difference >>> between Ansco 120 and Anso 130M on the same paper. I wonder if the small >>> differences in paper response apply to developers of the same class, e.g. >>> MQ >>> developers. Ansco 130 replaces HQ with glycin. It really has a longer >>> scale >>> in my hands. It may also be due to my use of benzo as a restrainer in my >>> paper developers instead of Na bromide. Don't know. >>> >>> Jim >>> ----- Original Message ----- >>> From: "DarkroomMagic" <info@xxxxxxxxxxxxxxxx> >>> To: "PureSilverNew" <pure-silver@xxxxxxxxxxxxx> >>> Sent: Monday, October 18, 2004 1:36 PM >>> Subject: [pure-silver] Re: Polycontrast Paper Performance / Cold lite >>> >>> >>>> My one-time experience with Selectol Soft brought paper contrast down by >>>> less than 1/2 grade. Since I get similar or better results with changing >>>> the >>>> factor of factorial development (FB papers only, of course), I gave up >>>> on >>>> soft developers and the increased darkroom complexity they bring. >>>> >>>> >>>> >>>> >>>> >>>> Regards >>>> >>>> >>>> >>>> Ralph W. Lambrecht >>>> >>>> >>>> >>>> >>>> On 10/18/04 6:24 AM, "Ryuji Suzuki" <rs@xxxxxxxxxxxxxxx> wrote: >>>> >>>>> From: Charlie Thorsten <charlie_thorsten@xxxxxxxxx> >>>>> Subject: [pure-silver] Re: Polycontrast Paper Performance / Cold lite >>>>> Date: Sun, 17 Oct 2004 12:03:41 -0700 (PDT) >>>>> >>>>>> A better alternative (besides a graded paper) is to use a higher >>>>>> contrast filtration (say grade 2) and develop in a low contrast >>>>>> developer like Selectol Soft. This will bring it down to between >>>>>> grade 0-1 but maintain better low values. >>>>> >>>>>> In my experience, anyway. :) >>>>> >>>>> Does it really work that way? In my experience it's really hard to >>>>> modify contrast by anything like 1 to 2 grades. (Lith printing is a >>>>> different story.) >>>>> >>>>> -- >>>>> Ryuji Suzuki >>>>> "Keep a good head and always carry a light camera." >>>>> ========================================================================== >>>>> == >>>>> == >>>>> =============================== >>>>> To unsubscribe from this list, go to www.freelists.org and logon to >>>>> your >>>>> account (the same e-mail address and password you set-up when you >>>>> subscribed,) >>>>> and unsubscribe from there. >>>> >>>> =========================================================================== >>>> == >>>> ================================ >>>> To unsubscribe from this list, go to www.freelists.org and logon to your >>>> account (the same e-mail address and password you set-up when you >>>> subscribed,) and unsubscribe from there. >>> >>> >>> ============================================================================ >>> == >>> =============================== >>> To unsubscribe from this list, go to www.freelists.org and logon to your >>> account (the same e-mail address and password you set-up when you >>> subscribed,) >>> and unsubscribe from there. >> >> ============================================================================= >> ================================ >> To unsubscribe from this list, go to www.freelists.org and logon to your >> account (the same e-mail address and password you set-up when you >> subscribed,) and unsubscribe from there. >> > > > ============================================================================== > =============================== > To unsubscribe from this list, go to www.freelists.org and logon to your > account (the same e-mail address and password you set-up when you subscribed,) > and unsubscribe from there. ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.