projection question/problem

[paul_wilson2]

I think this will be a somewhat unusual question and, strictly

speaking, isn't a medium format problem. However, here goes...

 

Awhile ago I purchesed a Cabin 667 projector which I got quite cheap

because it was missing the metal slide holder that goes in and out of

the projector. This is the model before the current Cabin 67

projector and is the same basic type but a completely different model.

 

I soldered up a replacement slide holder out of brass sheet and angle

and it works quite well (which is good, it was a lot of work). The

projected slides are very sharp and I'm happy with it except for one

thing.

 

Some of the slides I'm projecting are either Scala or Ilford processed

by DR5. I always get the neutral development done yet the slides all

look sepia toned when projected. Is there any filter I can use to

make them neutral again? I'm also wondering if the problem isn't the

brass carrier. It's just bare brass right now and maybe there are

reflections off it that are enough to impart the sepia tone. However,

the carrier doesn't appear to be in the light path that I can see.

 

Any ideas on a filter would be appreciated.

[douglas_price]

How about painting it matte black? Perhaps it is the tungsten light source? You could try blue filters designed for tungsten filtration.