[pure-silver] Re: RC to FB

I guess that's the point. The effect of aging shows right away and is no
longer a potential mystery. The idea is not to get sloppy with the
processing, but to tone the non-image residual silver is better than leaving
it available to other pollutants. One might even like the look of stained
highlights. Not everyone prints to get archival prints.

Of course, getting rid of residual silver through proper fixing is the best
method. However, I found it interesting that sulphide toner also converts
non-image silver, making it more stable.





Regards



Ralph W. Lambrecht




On 1/1/05 12:29 AM, "Richard Knoppow" <dickburk@xxxxxxxxxxxxx> wrote:

> 
> ----- Original Message -----
> From: "DarkroomMagic" <info@xxxxxxxxxxxxxxxx>
> To: "PureSilverNew" <pure-silver@xxxxxxxxxxxxx>
> Sent: Friday, December 31, 2004 5:28 AM
> Subject: [pure-silver] Re: RC to FB
> 
> 
>> Toning is more critical with FB paper, because RC is more
>> forgiving to
>> processing errors. According to Ilford Technical Services,
>> sulphide toner
>> also reacts with residual silver, compensating to, some
>> degree, this
>> processing error. Residual silver (or fixer) in RC is rare
>> compared to FB.
>> That's why there is less need for sulphide toning.
>> 
>> However, it is still recommended for both, and I do agree
>> that the toning
>> issue is the same for RC and FB, if both have been
>> processed 'properly'.
>> Unfortunately, 'properly' means different things to
>> different people.
>> 
> 
>   Ilford's remark is curious. Sulfide certainly does react
> with unfixed halide and with fixer reaction products: it
> tones them. This can result in veiling of highlights if the
> print is not fixed fully. A weak solution of sodium sulfide
> is a standard test for completeness of fixing because it
> leaves a stain if there is an residual halide.
>   I don't see how this compensates for incomplete fixing
> or washing, it simply produces the effects of age right
> away.

=============================================================================================================
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.

Other related posts: