Monday, February 21, 2011

White is not White

While I'm on the subject of white, there's more to it than meets the eye. Which color is a white wall in a photo? White you say? No, not exactly. A white wall is in fact never white. You might be able to spot all the colors of the rainbow in a white wall, except perhaps white.
Does that sound confusing? That's because it is. Here's an example of a photo with white walls. The walls do look white, don't they?

But if you isolate a few spots of the wall, you'll see which color they really have, when measured in the photo.
This illustrates the complexities of rendering new colors in photos. Which explains why Colorjive uses a unique algorithm to account for these effects. Because if it doesn't, your photo would look very artificial and the colors wouldn't look nearly as 'rich' as they should.

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