Archived posting to the Leica Users Group, 1999/04/02

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Subject: Re: [Leica] Off-subject - enlarger light source
From: "Dan Post" <dwpost@email.msn.com>
Date: Fri, 2 Apr 1999 10:41:03 -0500

Gerry-
I have used both the under the lens and dichroic method. The sharper cutoff
characteristics and purity of the dichroic filters, for me, was the deciding
factor in their favor. There was less variability in the printing times of
the dichroic filtration between grades.
With the individual filters, the printing times were often increased by a
factor of 5 whereas the dichroic filters were a lot less.
The only drawback was that the dichroic head did not have enough magenta to
do 4 1/2 and 5 contrast, but I rarely needed that contrast at all.
Stick with the dichroic head for speed and consistancy ( they don't fade
like gel filters)!
Dan
- -----Original Message-----
From: Gerry Walden <photos@gerrywalden.freeserve.co.uk>
To: leica-users@mejac.palo-alto.ca.us <leica-users@mejac.palo-alto.ca.us>
Date: Friday, April 02, 1999 3:20 AM
Subject: Re: [Leica] Off-subject - enlarger light source


>For a long time I have been using a Saunders/LPL 7700 with a diachronic
>diffusion head for all my b&w work, using the colour filters to adjust the
>contrast as needed.   Now my local camera store has a condenser head for
>this enlarger that has no built-in filtration.   Can someone please give me
>advise on the relative merits of this type of head?   BTW, I already have
>the necessary filtration for use below the lens if necessary, so will have
>no need to purchase the filters but have had some difficulty attaching them
>to my existing enlarger.
>
>Thanks for your help - although I have a feeling that I will get a lot of
>differing opinions!
>
>Gerry (UK)
>www.gerrywalden.co.uk
>
>