[pure-silver] Re: under-developed?
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Sun, 18 Feb 2007 15:40:26 -0800
----- Original Message -----
From: "Janet Cull" <jcull@xxxxxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Sunday, February 18, 2007 2:47 PM
Subject: [pure-silver] under-developed?
Can anyone describe what film looks like when it's under
developed? Thanks.
Janet
Low contrast and low density. The best clue is probably
the edge markings. These should be dark gray or black.
Negatives which have been properly exposed but
underdeveloped are often printable by using high contrast
paper. The disavantage is that the increased contrast will
also exagerate any blemishes or dirt on the negatives and
any uneveness of illumination in the enlarger.
It is possible to increase negative contrast by
intensification but there are hazards to it and most methods
increase grain. Probably the safest method is Selenium
toning but this produces only a modest amount of
intensification. Reportedly Kodak Brown Toner will also work
as an intensifier. Neither of these will damage the image.
Intensifying may be result in more satisfactory prints than
high contrast paper.
Note that if there is _no_ shadow detail at all neither
the use of high contrast paper or an intensifer will supply
it. This is more often the case for underexposure than
underdevelopment.
---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
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