From: <jjs> on
I'm on the edge of beating myself up. I got a very clean Ilford 400
enlarging head. It mounted properly to my enlarger. Tomorrow I will get some
more paper with the intent of using it.

But the filters are Yellow and Magenta.

Are these not the filters used for Ilford MC? I ask because a friend
suggested they are not.

Let me have it. I deserve it.

jj


From: Rob Morley on
In article <13oljep59cmg16b(a)news.supernews.com>,
<jjs> says...
> I'm on the edge of beating myself up. I got a very clean Ilford 400
> enlarging head. It mounted properly to my enlarger. Tomorrow I will get some
> more paper with the intent of using it.
>
> But the filters are Yellow and Magenta.
>
> Are these not the filters used for Ilford MC?

They're the right colours, but they might not give a full or evenly-
spaced range of grades, or consistent exposure. Try it and see.
From: Ken Hart on

<jjs> wrote in message news:13oljep59cmg16b(a)news.supernews.com...
> I'm on the edge of beating myself up. I got a very clean Ilford 400
> enlarging head. It mounted properly to my enlarger. Tomorrow I will get
> some more paper with the intent of using it.
>
> But the filters are Yellow and Magenta.
>
> Are these not the filters used for Ilford MC? I ask because a friend
> suggested they are not.
>
> Let me have it. I deserve it.
>
> jj
>
>

_Generally_, if you have to use cyan, you screwed up (I've never done
reversal color, where I suspect cyan would be used). Remember, if you add
all three colors, you get neutral density (less light across the spectrum).
I have a set of color printing filters for my Omega D2V. The set as
purchased included perhaps a dozen each of yellow and magenta in different
densities, but only four or five cyan densities.

The old Polycontrast filters each required a different exposure. If you had
a perfect density print with a grade 2 filter, and wanted to change to grade
four, you had to come up with a new exposure, using your Kodak Darkroom
Dataguide. The newer filters have neutral density added (cyan) so that the
exposure changes only once (when you switch from 3 to 4, IIRC. I could go
downstairs to check, but...)


From: Lawrence Akutagawa on

<jjs> wrote in message news:13oljep59cmg16b(a)news.supernews.com...
> I'm on the edge of beating myself up. I got a very clean Ilford 400
> enlarging head. It mounted properly to my enlarger. Tomorrow I will get
> some more paper with the intent of using it.
>
> But the filters are Yellow and Magenta.
>
> Are these not the filters used for Ilford MC? I ask because a friend
> suggested they are not.
>
> Let me have it. I deserve it.

Spare yourself. A bit of research on the net dug up the following:

http://www.ilfordphoto.com/Webfiles/20062111029251325.pdf

in which is -

"The simplest way of controlling the colour of the light reaching the
emulsion during exposure is by the use of filters: a magenta filter absorbs
green light and transmits blue; a yellow filter absorbs blue light and
transmits green."


From: Rob Morley on
In article <fmep98$2gl$1(a)aioe.org>, Ken Hart
kwhart1(a)verizon.net says...

> The old Polycontrast filters each required a different exposure. If you had
> a perfect density print with a grade 2 filter, and wanted to change to grade
> four, you had to come up with a new exposure, using your Kodak Darkroom
> Dataguide. The newer filters have neutral density added (cyan) so that the
> exposure changes only once (when you switch from 3 to 4, IIRC. I could go
> downstairs to check, but...)
>
With this head the control unit should compensate for exposure when you
change the grade.
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