Dream glow
Applied to the right material, this effect suffuses the scene with a spectral glow suggestive of altered reality. Adjustable Blur and Glow parameters let you fine tune the appearance. Glow is a uniform brightness boost. As its level increases, the lighter parts of the image are replaced by expanding whited-out regions as the maximum brightness level is reached or exceeded.
An outdoor scene with (L) and without (R) the Dream glow effect.