Colour sep: who does it?

[Photo Engineer]

Ron, I have one more question. Assuming I get my registration issue solved and try an additive print, will I a color issue from not having the orange mask associated with color negative film? Will I need some sort of filtration for this? I will be using a color enlarger, but with gel filters for the additive exposures.

Greg;

The orange mask is intended to correct for impurity in the negative dyes. Since there are no dyes involved, and if you use narrow printing and exposing filters, there will be no problem. In fact, your colors in a traditional color print will be better than a white light print from a negative.

Use WR 98/99/70 for your combo.

PE

[Greg Davis]

Would I use the same filters you list for exposing the film in camera? Or the more traditional 25/58/47?

[Greg Davis]

Nevermind. I read the descriptions of the filters and see that they are appropriate for both stages.

[keithwms]

Greg I'll be in Lexington in a few weeks; perhaps we could meet up and chat it out.

[Greg Davis]

That would work if I weren't already in Miami. I won't be back in Lexington except the last week of December.

[keithwms]

Ah okay. Well I will be there for the Christmas holidays for sure. Most of my family lives in Lexington, Versailles, and L'ville.

[Greg Davis]

We may be able to meet up the week between Christmas and New Years if we're both up to it after spending time with in-laws.

[Ektagraphic]

why couldn't you use the filters when you are printing the neg instead of when you are actually taking the photograph?

[keithwms]

why couldn't you use the filters when you are printing the neg instead of when you are actually taking the photograph?

Because I'd want to take full advantage of the tonality of b&w film and develop the negs using the usual b&w process.

Of course, I know that I can shoot colour print or slide film, but that's not the point.

Now, preparing colour sep negs for RA4 sounds interesting to me... but actually I was thinking about the earlier processes using gums.

[Photo Engineer]

why couldn't you use the filters when you are printing the neg instead of when you are actually taking the photograph?

You can, but you need to start with a color negative, and the desire is to use a trio of B&W negs.

PE