[pure-silver] Re: safe light
- From: "Bob Younger" <ryounger@xxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Mon, 9 Jun 2008 07:05:45 -0700
I use primarily Ilford Multigrade and have the Thomas FCD filter
which according to the manufacturer is designed for use with
"some color print materials." My darkroom is more than
sufficiently lit, and I've run extended fog tests with allowable
exposure up to 30 minutes before perceptible fog.
I had a lot of problems with the B&W filter set for the Thomas;
the same I believe as the KODAK OC filter, though Thomas has a
different code on it. It would begin to fog within just beyond
normal print/dev times.
I just checked and the FCD filter set is a special order at B&H.
By the way, if you're looking at used filters, the FCD come with
black tape on the edges, and the OC filters I think have green
tape on them.
Bob Younger
-----Original Message-----
From: pure-silver-bounce@xxxxxxxxxxxxx
[mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of Georges
Giralt
Sent: Monday, June 09, 2008 6:45 AM
To: pure-silver@xxxxxxxxxxxxx
Subject: [pure-silver] Re: safe light
Hi !
Orange light is "a coumpound color" so it can/may fall into the
paper's sensibility zone. Often, red fall outside this
sensibility zone. The problem is that our eyes are far less
sensitive to red than to orange, so for comfort we
often choose orange over red.
But orange safelight will fog most B&W multigrade papers. the
Forte, Foma and maybe Efke (I can't tell for sure, as I do not
use them, but if they ask for red...)
If you still want to use orange and keep your contrast correct
and the paper's margin white, the light level will be so dimm
that you'd better turn the safelight off and save the
electricity....
Just my 2 cents.
Selon Bogdan Karasek <bkarasek@xxxxxxxxxxxx>:
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