In article <470ecded$0$9594$4c368faf@[EMAIL PROTECTED]
>,
gr <greif1nospam@[EMAIL PROTECTED]
> writes:
>
>
> Rod Smith wrote:
>> In article <1191991399.957104.148210@[EMAIL PROTECTED]
>,
>> sreenath <sreenathbh@[EMAIL PROTECTED]
> writes:
>>> On Oct 10, 9:15 am, gr <greif1nos...@[EMAIL PROTECTED]
> wrote:
>>>> I may have to do a project which uses RA4 type color paper, but want
to
>>>> end up with a B&W silver image. Can I process the silver in this and
get
>>>> rid of the incor****ated dye somehow?
>>
>> I've done it occasionally, usually as part of a reversal process (to
print
>> slides on RA-4 paper, which is another topic entirely....). The result
is
>> a rather faint and low-contrast image; the blackest "black" is more
like a
>> middle grey. I don't know if some particular developer would create a
>> blacker black. (I've used E-72 and DS-14.)
>>
>> I have to ask the OP why he's got those particular constraints.
>
> I need a specific combination of surface finish and substrate that is no
> longer manufactured with a B&W emulsion. Curse the manufacturers for
> dropping all the black and white products!
Then I suggest your best bet is probably to process the paper normally (in
RA-4 chemistry) and use color filters to get a neutral tone. (I've heard
that using a blank strip of color film sandwiched in with a B&W negative
can help in this respect, although I've never tried this, myself.)
Processing RA-4 paper in B&W chemistry will result in a faint image, at
least in my experience. OTOH, maybe you could find a B&W developer that'd
do the trick, or maybe some special processing after the normal B&W
processing (intensification or toning, say) could darken the rather faint
blacks.
--
Rod Smith, rodsmith@[EMAIL PROTECTED]
of books on Linux, FreeBSD, and networking
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