[pure-silver] Re: Shoulder and highlight

Bob, are you using sensitometry to determine the shoulder of the Tri-X or 
are you interpreting that it has a shoulder based on a print? If the latter, 
are you seeing the differences between Arcos and Tri-X on the same paper?

I'm not sure you can totally compensate starving due to dilution merely by 
using larger volumes of developer. In my 4x5 protocol, I doubled the volume 
of Rodinal 1:50 in the tube to compensate for starving (of FP4 especially) 
and it didn't get me much closer to the predicted density--I mean it was WAY 
off.  This was most obvious on the N+2 and N+3 protocols. I had no such 
problems after I switched to D76 1:1. I like Rodinal, so I may go back and 
try it at 1:25.

You might try Ralph's suggestion to try 1:1 to rule out that effect.

Jim
----- Original Message ----- 
From: "Bob Randall" <bob@xxxxxxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Friday, December 31, 2004 3:50 PM
Subject: [pure-silver] Re: Shoulder and highlight


> On 12/31/04 2:21 PM, "DarkroomMagic" <info@xxxxxxxxxxxxxxxx> wrote:
>
>> I use D76 at 1+1 and have no trouble. Could it be that your dilution of 
>> 1+3
>> starves the highlights of TriX, flattening the shoulder in the process?
>
> I think I use too much volume to be starving the highlights. I like your
> comment about the rolling shoulder against the straight line curve, very
> helpful wording.
>
> Thanks,
>
> Bob Randall
>
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