The visually stunning field of tilt-shift photography became a fairly big thing in the Web a couple of years ago. It uses a special lens that gives a real-world scene the illusion of being a miniature model.
"The effect can be simulated in Photoshop, by adjusting a photograph's contrast, colour saturation and depth of focus. It works quite well with regular photographs, so we decided to try it using paintings to see what would happen, and it turns out that the works of Vincent van Gogh in particular make excellent subjects for this kind of treatment.
To reiterate: Nothing in any of these paintings been added or removed or had its proportions changed. The effect is achieved simply by manipulating the light in the scene and adjusting the areas of the image that are more and less in focus, as you will see.
This is all being done in fun, so don't take it too seriously. But having said that, we're pretty sure you will discover several paintings you've never seen before, and stumble across some previously unnoticed details in the works you think you know well. Enjoy!"
For credits and the original paintings unaltered, visit Art Cyclopedia.