Thought You Knew the Histogram? Here’s a Cool Lesson

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Histogram Trick from Ironic Sans

We all know that a histogram is a graphical representation of the dark and light pixels in an image; it shows how many pixels of the varying shades – from the blackest to the lightest – you have in a photo.

David Friedman of turned the idea around and created an image in the histogram itself and hid it in an image that looked like a gradient fill. Then he posted a challenge to readers to find the hidden image.

Genius. In the link below, he detailed how he did it, in the process explaining what a histogram is really like.

Unfortunately, the image he used was an old one which still showed the tragic twin towers of the WTC, and it sparked a distracting debate in another direction. Ironic, eh?


Published by Chris Malinao

Chris teaches Lightroom as workflow software to photography students at the FPPF, Federation of Philippine Photographers Foundation. He also teaches smartphone photography.