On Feb 2, 10:42=A0am, piterengel <pslavi...@[EMAIL PROTECTED]
> wrote:
> Hi, I've had a discussion with a friend of mine about darkroom safe
> light.
> Even if on Ilford Multigrade paper box a light brown safelight is
> indicated, in my opinion a red safelight works well too. Or, better,
> red light is "more universal" than light brown one. Is this correct?
> Thanks all
> P.
Red is very good for blue sensitive materials. How red is a
question. Many lights that look red are only mostly red and radiate a
lot of other colors, as well.
Kodak recommends some simple tests for safelights (you can find them
by searching the archives in this board). Their tests are suitble for
any sensitive material and let you evaluate candidate safelights
(whatever is claimed about them).
Panchromatic and multigrade paper have other safelight requirements.
Green is often recommended for panchromatic film or paper. That
recommendation is accompanied with advice to use it late in the
development, at low intensity. It is recommended because the eye is
sensitive to green and panchromatic film is a little less sensitive at
that wavelength. Multigrade papers vary depending on the
manufacturer's formula
Long wave IR and night vision goggles work well when money is no
object.
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