This effect was generated in Filter Forge, a Photoshop plugin that allows you to create your own filters.
Works as an overlay to an image, giving it a paint to charcoal to chalk picture effect.
If its put on an alpha image it will only change the solid parts. Full picture it changes all of it, but depending on the paint thickness you see more of the under image.
Brush strokes, charcoal, chalk, paint effect on pictures, image altering filter.
This filter has earned its author one of our rewards. They are given to the authors of popular filters and include a free copy of Filter Forge.