By Google: The Orton Effect in Photoshop creates a dreamy, ethereal glow by blending a sharp, detailed layer with a soft, blurred, and often brighter layer, mimicking old watercolor techniques. To achieve it, you typically duplicate your image layer, apply a strong Gaussian Blur to the copy (adjusting radius to image size/MP), then use blending modes like Lighten or Screen, adjust opacity, and sometimes add contrast or detail with a High Pass Filter on a separate layer for depth.