Film · a look in liminal.repair
On film, bright light passes through the emulsion, reflects off the base, and scatters back — glowing outward from highlights, usually with a warm red cast because the anti-halation layer absorbs unevenly. It is why practical lights in film photographs bleed so beautifully.
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This tool isolates highlights above a threshold, blurs them, tints them, and blends them back over the image.
Cameras built on it — open one and it loads onto your own photo.
Halation is the glow around bright highlights caused by light reflecting inside film and scattering back through the emulsion, often with a reddish tint.
Bloom is a general highlight glow; halation is specifically the warm, film-derived version caused by reflection off the film base.