Add a soft, luminous glow to a clip while the edges and texture stay sharp. Michael Orton made the effect in the 1980s by sandwiching a sharp and an out-of-focus slide of the same scene. Here the sandwich is made on every frame.
Blur radius and glow amount
Blur Radius sets how far the soft layer spreads, as a percentage of the frame’s short edge. Around 1% it reads as a light haze over texture; past 4% the soft layer loses recognisable shapes and turns into colored light. Glow Amount is the blend weight: most footage settles between 50% and 75%.
Soft layer exposure
The soft copy is brightened before the blend, as Orton overexposed both slides. Raising Soft Layer Exposure while lowering Glow Amount gives a tight, bright bloom. The reverse gives a broad, even wash.
Footage that glows
Backlit scenes, foliage with sun coming through, water, and skin in window light carry the effect best. Saturation compensates for the washed look the screen blend gives colors. Because the glow is recomputed each frame, moving highlights such as glints on water bloom as they travel.