Dumb question

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David's picture
Joined: 17 Dec 2004 - 1:46pm
Dumb question

Okay, this is probably some really simple problem that I can't figure out. See the attachment for what I am trying to achieve.

How do I make the logo, or any vector for that matter, do this positive/negative thing when placed over images?

I placed the vector on a separate layer in InDesign, colored it white, and set the transparency to Difference or Exclusion. The vector appears black over the light colored background, but over the dark background it appears a gray.

Dan Hall's picture
Joined: 13 Oct 2005 - 2:40pm

I think InDesign is the wrong tool for the job. My pick would be Photoshop.

Tiffany Wardle's picture
Joined: 13 Jul 2001 - 11:00am

From looking at the image I'd say they didn't use a filter. I think they did use something like Illustrator and cut the letters to match the shapes.

beats's picture
Joined: 10 Oct 2007 - 12:47pm

Difference blending mode, simply creates the inverse value, if the underlying image isn't truly black or white the result will look gray.

You can achieve the effect in photoshop.

Create text on a new layer above the photo or image.
Set the text layer mode to 'difference'.
Rasterize your text layer and and create a selection from that layer.
Select the photographic layer with the selection still active, increase the contrast of the photographic layer ( will only affect the area beneath the text).

That should do it.

If you're not familiar with photoshop, these instructions may seem a bit cryptic, be warned.

Ricardo Cordoba's picture
Joined: 6 Jun 2005 - 6:57pm

I think they did use something like Illustrator and cut the letters to match the shapes.

I agree... You can use the Pathfinder tools in Illustrator to divide an outlined shape (read: logo), apply colors, then bring it into Photoshop or InDesign.