Contrast and brightness via image effect

[system]

Hi, Is there an image effect shader that we could use for contrast and brightness of scene? thanks a lot

[Jessy]

http://unity3d.com/support/documentation/Components/comp-ImageEffects.html

[Stardog]

http://forum.unity3d.com/threads/40060-Image-Effect-for-Bloom-Blur-Color-Correction-Exposure-Adjust

Works well in Unity 4.1.2 without errors.