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Lloyd Erlick

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Since: Feb 15, 2005
Posts: 83



(Msg. 1) Posted: Sun Oct 14, 2007 11:05 am
Post subject: Colorine safelight bulb dipping paint by Rosco
Archived from groups: rec>photo>darkroom (more info?)
October 14, 2007, from Lloyd Erlick,

Some time ago I posted about a darkroom
material called Colorine bulb dipping paint,
made by Rosco, the company that makes gels
and color filters. It comes in many colors,
and is meant to paint light bulbs specific
colors.

The color I liked was number 27, safelight
red. I bought a little can, twenty bucks for
a half pint, and coated a number of small
light bulbs.

I've been very slow to actually test any of
these, and I've only placed them distant from
photosensitive materials so far.

Yesterday I did the simple 'CD darkroom
safelight test' on them. I held a CD under a
safelight, room lights off, and observed the
light reflected from the surface. There was a
definite blue component. Lights that have
proved safe reflect no blue light.

I realize the test is not definitive (in the
case of a light that seems safe and reflects
no blue) but as far as I am concerned these
lights are not safe and I'm not bothering
with painting light bulbs any more. It's
possible they need a second or third coat,
but I'm not sniffing that stuff any more just
to see if it works, and I'm sorry I brought
it up.

regards,
--le
________________________________
Lloyd Erlick Portraits, Toronto.
website: www.heylloyd.com
telephone: 416-686-0326
email: portrait RemoveThis @heylloyd.com
________________________________
--

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see

External


Since: May 19, 2004
Posts: 482



(Msg. 2) Posted: Sun Oct 14, 2007 2:09 pm
Post subject: Re: Colorine safelight bulb dipping paint by Rosco [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
"Lloyd Erlick" <Lloyd at @the-wire. dot com> wrote
> Some time ago I posted about a darkroom
> material called Colorine bulb dipping paint,
> ... I held a CD under a safelight .. there was a
> definite blue component. Lights that have
> proved safe reflect no blue light.

> I realize the test is not definitive ...
> but as far as I am concerned these
> lights are not safe

> I'm sorry I brought [up the possibility of
> DIY safelights].

Oh, nooo. Negative knowledge - knowing the
exceptions - is more valuable than positive
as it defines the boundaries.

It is better to know where the dragons lie
then to know of just another place where they
possibly aren't/didn't see any. It is
impossible to prove there isn't a dragon
but easy to prove there is.

--
Nicholas O. Lindan, Cleveland, Ohio
Darkroom Automation: F-Stop Timers, Enlarging Meters
http://www.darkroomautomation.com/index.htm
n o lindan at ix dot netcom dot com

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dickburk

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Since: Jul 01, 2004
Posts: 1173



(Msg. 3) Posted: Sun Oct 14, 2007 2:56 pm
Post subject: Re: Colorine safelight bulb dipping paint by Rosco [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
"Lloyd Erlick" <Lloyd at @the-wire. dot com> wrote in
message news:s0c4h3hj61fr04lmgt2b9obvj3ieg4ibog@4ax.com...
> October 14, 2007, from Lloyd Erlick,
>
> Some time ago I posted about a darkroom
> material called Colorine bulb dipping paint,
> made by Rosco, the company that makes gels
> and color filters. It comes in many colors,
> and is meant to paint light bulbs specific
> colors.
>
> The color I liked was number 27, safelight
> red. I bought a little can, twenty bucks for
> a half pint, and coated a number of small
> light bulbs.
>
> I've been very slow to actually test any of
> these, and I've only placed them distant from
> photosensitive materials so far.
>
> Yesterday I did the simple 'CD darkroom
> safelight test' on them. I held a CD under a
> safelight, room lights off, and observed the
> light reflected from the surface. There was a
> definite blue component. Lights that have
> proved safe reflect no blue light.
>
> I realize the test is not definitive (in the
> case of a light that seems safe and reflects
> no blue) but as far as I am concerned these
> lights are not safe and I'm not bothering
> with painting light bulbs any more. It's
> possible they need a second or third coat,
> but I'm not sniffing that stuff any more just
> to see if it works, and I'm sorry I brought
> it up.
>
> regards,
> --le

Colored bulbs have always been suspect although those
sold as "ruby" lamps, with colored glass envelopes are
better. I still use Kodak "beehive" safelights. They need to
be checked occasionally since the filters can fade. Both
Kodak and Ilford have procedures posted on their websites
for testing, I think the Kodak one is called Publication
K-4.
The beehive and also the large, square, safelight lamps
show up used quite often, usually at pretty low prices.
I prefer the OC type safelight to red ones although red
safelights are probaby "safer".


--
---
Richard Knoppow
Los Angeles, CA, USA
dickburk DeleteThis @ix.netcom.com
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Jean-David Beyer

External


Since: Jan 28, 2008
Posts: 10



(Msg. 4) Posted: Sun Oct 14, 2007 10:53 pm
Post subject: Re: Colorine safelight bulb dipping paint by Rosco [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Richard Knoppow wrote:
> "Lloyd Erlick" <Lloyd at @the-wire. dot com> wrote in
> message news:s0c4h3hj61fr04lmgt2b9obvj3ieg4ibog@4ax.com...
>> October 14, 2007, from Lloyd Erlick,
>>
>> Some time ago I posted about a darkroom
>> material called Colorine bulb dipping paint,
>> made by Rosco, the company that makes gels
>> and color filters. It comes in many colors,
>> and is meant to paint light bulbs specific
>> colors.
>>
>> The color I liked was number 27, safelight
>> red. I bought a little can, twenty bucks for
>> a half pint, and coated a number of small
>> light bulbs.
>>
>> I've been very slow to actually test any of
>> these, and I've only placed them distant from
>> photosensitive materials so far.
>>
>> Yesterday I did the simple 'CD darkroom
>> safelight test' on them. I held a CD under a
>> safelight, room lights off, and observed the
>> light reflected from the surface. There was a
>> definite blue component. Lights that have
>> proved safe reflect no blue light.
>>
>> I realize the test is not definitive (in the
>> case of a light that seems safe and reflects
>> no blue) but as far as I am concerned these
>> lights are not safe and I'm not bothering
>> with painting light bulbs any more. It's
>> possible they need a second or third coat,
>> but I'm not sniffing that stuff any more just
>> to see if it works, and I'm sorry I brought
>> it up.
>>
>> regards,
>> --le
>
> Colored bulbs have always been suspect although those
> sold as "ruby" lamps, with colored glass envelopes are
> better. I still use Kodak "beehive" safelights. They need to
> be checked occasionally since the filters can fade. Both
> Kodak and Ilford have procedures posted on their websites
> for testing, I think the Kodak one is called Publication
> K-4.

It is K-4, and you can get it from here:
http://www.kodak.com/global/en/consumer/products/techInfo/k4/k4Contents.shtml

> The beehive and also the large, square, safelight lamps
> show up used quite often, usually at pretty low prices.
> I prefer the OC type safelight to red ones although red
> safelights are probaby "safer".
>
>


--
.~. Jean-David Beyer Registered Linux User 85642.
/V\ PGP-Key: 9A2FC99A Registered Machine 241939.
/( )\ Shrewsbury, New Jersey http://counter.li.org
^^-^^ 18:45:01 up 8 days, 2:21, 4 users, load average: 5.39, 5.26, 5.20
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Lloyd Erlick

External


Since: Feb 15, 2005
Posts: 83



(Msg. 5) Posted: Mon Oct 15, 2007 7:13 am
Post subject: Re: Colorine safelight bulb dipping paint by Rosco [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
On Sun, 14 Oct 2007 14:09:34 -0500, "Nicholas
O. Lindan" <see.DeleteThis@sig.com> wrote:

>It is
>impossible to prove there isn't a dragon
>but easy to prove there is.



October 15, 2007, from Lloyd Erlick,

Yes, but when we do a conventional safelight
test, are we not proving that a specific
dragon is absent?

Or is it merely absence of the proof of the
existence of the dragon ...

regards,
--le
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see

External


Since: May 19, 2004
Posts: 482



(Msg. 6) Posted: Mon Oct 15, 2007 9:54 am
Post subject: Re: Colorine safelight bulb dipping paint by Rosco [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
"Lloyd Erlick" <Lloyd at @the-wire. dot com> wrote

> Or is it merely absence of the proof of the
> existence of the dragon ...

Hit the undemonstrated serpent on the head...

http://en.wikipedia.org/wiki/Falsifiability

--
Nicholas O. Lindan, Cleveland, Ohio
Darkroom Automation: F-Stop Timers, Enlarging Meters
http://www.darkroomautomation.com/index.htm
n o lindan at ix dot netcom dot com
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