blaughn said:
Generally, the VC papers are less tolerant
of bright safelights.
The intensity or brightness of the light has nothing
to do with it. I could have made that more clear in my
earlier post this thread when writing of safelights.
Simplifying a little, VC papers are BLIND to RED
and Graded papers are BLIND to RED and GREEN.
Papers see not the colors to which they are blind.
What does the EYE see? More by some the eye is
sensitive to green and less so to red. IIRC, electronic
image sensors in cameras double up on green in order
to mimic the eye's sensitivity to green.
Sodium vapour lamps are a narrow band source of
light in the yellow portion of the spectrum. They
can be and are used in Graded paper darkrooms.
As I mentioned in my earlier post, if there were
narrow band filters or light sources suitable for
VC papers then the VC problem of dim lighting
would be much alleviated. That is, "... bright
safelights" could be used.
As for safelights, I'm quite sure the industry has
somewhat adopted a ONE-SIZE-FITS-ALL strategy.
For example, Kodak recommends the OC filter for every
paper, even AZO! I think Ilford makes more allowance.
I saw several filters suggested when last night I
was checking out their Ilfospeed Graded RC
paper. Yellow to orange-ish yellow do well
with Graded. That's what I've got. Dan