OneOne Software Perfect B&W gum bichromate effect

Create a beautiful gum bichromate effect in Perfect B&W

07 Contrast Brush

OneOne Software Perfect B&W gum bichromate effect

I think some parts of the image need more contrast, too, so I’m swapping to the Contrast Brush (directly below the Brightness Brush), making sure the Mode is set to More Contrast. The effect can be relatively subtle, so I’ve pushed the Amount slider on the options bar up to a value of 75.

08 Increasing the contrast

OneOne Software Perfect B&W gum bichromate effect

Now I just paint over the areas which I think need a little more contrast – again, I’m not using the Perfect Brush option because I want to blend in the effect subtly.

09 The finished image

OneOne Software Perfect B&W gum bichromate effect

I’m really pleased with this, but I do have a confession to make. I launched Perfect B&W from within Aperture, and then applied a levels adjustment in Aperture afterwards to brighten up the finished image. I could probably have done this in Perfect B&W, but didn’t notice it needed it at the time.

See also

More Perfect B&W tutorials

3 thoughts on “Create a beautiful gum bichromate effect in Perfect B&W

  1. Really! Can you suck the life, art, and craft out of photagraphy any more. Why on earth would you want to do this on a computer. It’s the hands on that makes Gum printing so beautiful. A monkey can use this software, your killing the art.

    1. Well you sure sucked the life, art and craft out of me! Really, you ought to be able to express an opinion without being so insulting.

  2. Hay, Thank you for this. I feel this is a fascinating exploration of how to expand modern photography and digital design. Some people won’t get it but this was helpful. Thanks again.

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