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From: "CLCOOK@OLYWA.NET" 
Date: Sat, 17 Jan 04 09:46:34 +0100
Subject: Re: Compact fluoro lamp in enlarger
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Date: Sat, 17 Jan 2004 09:46:33 -0800
To: 
From: Carl Cook 
Subject: Re: Compact fluoro lamp in enlarger
In-Reply-To: 
References: 

There is also a single filter available that takes some of the blue out of 
the cold light so VC filters can be used. Also, found this web page with a 
discussion on this topic

http://www.largeformatphotography.info/lfforum/topic/445679.html

I tried to find a web site for Zone VI which sells cold light heads, both 
with and without built-in VC capability, but no luck. Aristo also makes a 
cold light head (I have this one), also in a built in VC model. But your 
home made head sounds like more fun.

Carl


At 10:03 AM 1/17/2004 -0700, you wrote:


> > Your examples don't look too bad at all, although the prints are on the
> > gray/muddy side.
>
>         This may be because the prints were stacked, all scanned together,
>and the scan not adjusted in any way so as not to complicate matters.
>I'm hoping that the contrast can be evened out, or I may try something
>else. The core of the situation is that the electric supply here is hard on
>tungsten bulbs. It used to be a continual chore to replace lamps in the
>exit signs until a source of 135 volt lamps that would fit most of them
>turned up. But those are just 15 watt or so. Interesting to learn of cold
>light filter sets, never have seen them in catalogs.
>Rich
> > Basically, it looks like you are creating a cold light head. There are
> > printers who swear by them. Some say a cold light covers up minor
> > imperfections in the negatives like minor scratches and blemishes. I found
> > this to be true to an extent. True cold light heads use tubes that are
>more
> > on the blue side of the spectrum rather then the green of regular
> > florescent lights.
> >
> > My own experiences with a cold light head on a Beseler 23c were quite
>good.
>
>
>
>