Using Rosco filters for Multi-grade printing??

[Bob Farr]

Hi,

Am curious, can Rosco filters be used for multi-grade printing on Multi-grade paper??

If so, which ones??

Thanks in advance,
Bob

[vinny]

I've got this info saved:


"The September/October 2005 issue of Photo Techniques has an article by
Howard Bond titled "Variable-Contrast Printing and Rosco Filters". He suggested using the
Rosco Calcolor 15Y, 30Y, 60Y, 90Y, 15M, 30M, 60M, and 90M filters.
The article explains how he made those choices, and how to test for
your own

[Leigh]

Rosco gels are light modifiers, designed to be used on the lights, not in the image optical path.

They might (or might not) degrade the printed image if used between the negative and the paper.

I've seen enlargers with a filter drawer above the negative, which would be appropriate for these.

- Leigh

[Bob Farr]

Hi vinney,

THANKS, that is the article I loaned out and then it was misplaced.

Do you know of anyone who has experience with these filters??

Have seen the Rosco filters at B&H, will check to see if they are the Rosco Calcolor filters.

Cheers,
Bob

[Bob Farr]

Hi Leigh,

That is also great to know!!

Thanks,
Bob

[bigdog]

If the enlarger has an above the negative filter drawer.

Another approach is to do split grade printing using blue and green filters. The Lee filter numbers are #58 green and #47 blue. There are Rosco equivalents.

[John Kasaian]

Oh.
I thought this thread was about Bosco and I was getting a hankering for some chocolately goodness!
Never mind.

[Bob Farr]

Haven't had any Bosco in ages. It's still made??

[EdWorkman]

Use Roscoe Green, Minus Green and if you gotta pull out the stops for contrast, Blue, maybe
They come [ well when I bought them] in "1/4" increments and can be stacked.
Forget yellow. It may get you to a more neutral cold light, but why , it just wastes light.
Multi-Grade responds to green and blue light, so all you need are the above, and a little experience to see how contrast and print time change.
Per the thread above, I use them above the diffuser and negative. Unless you hawk a loogie on one the optics are not a problem.

[Dan Henderson]

If the enlarger has an above the negative filter drawer.

Another approach is to do split grade printing using blue and green filters. The Lee filter numbers are #58 green and #47 blue. There are Rosco equivalents.

I first learned to split grade print using these exact filters, and still use them. The instructor who first taught me split grading thought it made more sense to use the actual colors that VC paper is sensitive to, rather than the complementary colors. After learning more, I think he was teaching the use of them reversed, (blue first, green second), but his basic premise was sound.

Oh, I only use them above the negative stage, not below.