[pure-silver] Re: White Light
- From: "Rob Champagne" <app@xxxxxxxxxxxxxxxxxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Tue, 04 Jan 2005 13:26:47 +0000
if the 4x5 pmk neg was developed according to testing for graded paper around
grade 2 then it would look muddy on VC paper with no filter anyway. Sandwiching
a grade 4 or 5 filter should bring it back.
if it was developed according to testing for VC paper then the light source
probably has too much yellow in it.
for controlling brightness then some LEE neutral density lighting filters of
density 0.1 should control that. You just add additional layers of filter to
get to where you want to be. the lighting filter sheets are cheap (not
optically perfect) and come in big sheets which are simple to cut to size.
Ilford MG filters can also be had in big sheets but are pricey. (30x30cm sheet
is approx 30 gbp for one sheet. rip off Britain strikes again)
At 04/01/2005 07:26 -0500, you wrote:
>I have a 5x7 contact printer that has miniature frosted white incandescent
>bulbs for the light source. I am aware that the unit should be used with
>graded paper, but what would be the filter equivalent (if there is one) of
>using this white light source with VC paper? I did do some tests (4"x5" PMK
>neg) and the print appeared "muddy" so it is probably not feasible with VC
>paper... I am just curious
>
>Regards,
>
>Chris
>
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