We took a closer look at "Halation" in DaVinci Resolve (DR for short) and FilmConvert Nitrate. Plus "Scatter", which digitally replicates conventional diffusion filters. The term is derived from the greek word "halo", which in itself means the ring of light around the head of a holy figure or around bodies in the sky under certain conditions. In German this would generally be translated to the same meaning, but in the context of opto-chemical film it is referred to as "Lichthof" (a "court of light"). The incident light, or what is left of it, is reflected by the film carrier on the back (usually polyester, formerly cellulose acetate) and scattered in the process. To minimise the effect, there is even a halation protection layer behind the colour-sensitive film layers. However, this cannot suppress all light emitted by strong, localised reflections or light sources; a certain amount is always reflected back diffusely. This is what halation alone would look like without the image. Now th...
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