: Preparing design for duotone printing? I've been asked to design a poster that will be printed in two inks: black and pantone 631c. It's a simple design, a photograph and text. Should the photo

@Jessie844

Do whatever you want. But do something interesting.

A normal duotone is made of a grayscale image (A) and then converted into a duotone (B)

If you edit the curves on one ink for example you can have something a bit diferent (C)

otake.com.mx/Foros/InterestingDuotone-01.jpg
But you can take a more interesting aproach.


Convert the image to grayscale for the black ink (D) Play with the contrast.
But for the 631 ink use the complementary RGB channel, in this case Red (E) Play with the contrast.
Make the 631 to a monotone and asign your pantone color and put it on top of the other.
To preview it use multiply (F). Now that is a cool duotone!


otake.com.mx/Foros/InterestingDuotone-02.jpg
You can mask the sky, mask the skin so no blue color cast on the face, etc.

Note

In some cases you need to use some of the CMYK channels, but start with the complementary RGB. The reason for this is that CMYK channels can decrease the ammount of ink when the color is aproaching a very dark black.

(I love some results a duotone can achive) :o)

Original Photo: pixabay.com/static/uploads/photo/2016/08/05/14/53/girl-1572419_960_720.jpg

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