Go into --> layer --> color --> invert This will completely invert all colors. Print it on to the overhead transparancy and make your contact print. Don't think you'll need the orange mask like on the normal negative, you'll have to adjust the filter settings on your enlarger while copying, you'll have to do some testing.

Why do you want to make a contact print this way, you'd get far better results by printing directly on to high quality paper instead of going through the extra step of making a transparency. It's normally easier to get a good print onto high qual paper than an overhead trans.

/David

Message: 2
Date: Mon, 15 May 2006 20:48:02 +1000 From: "Simon Mitchell"
Subject: [Gimp-user] Creating a colour negative in gimp. To: gimp-user@lists.xcf.berkeley.edu Message-ID:

Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Hello, I would like to take a jpg and print it on a overhead transparency. Then use this transparency to do a contact print on colour photo paper.

I can invert the image ok in gimp. But how do I add the orange mask like in a normal negative?

Thanks regards, Simon

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