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SDR literally has fewer brightness bits. You can tonemap with the darkest in a scene pulled to zero and the brightest to 1, but, this is not usually what the co
by freeone3000 1y ago
SDR literally has fewer brightness bits. You can tonemap with the darkest in a scene pulled to zero and the brightest to 1, but, this is not usually what the color grader intended so usually isn’t done automatically. And when you do this, you end up with gaps in the middle (like 18-bit color). So usually, a range “in the middle” is reserved for SDR, and the extra two (or four, or six) bits of brightness in HDR allow you to pull it darker or brighter.
- sim7c00 1y agothanks for your insights. my comment was overly cynical. in practice though visually , on a good (really good) monitor, you really can not see a difference. trained eyes, cannot really see a real difference. the difference becomes visible more due to a monitors own quircks not displaying accurately (mapping of this sdr/hdr to colourspace). this was posted before here on HN and i dont think its wrong. though ofcourse, technically, there are differences, which might be in some applicaitons ( but usually are not) exploited to the viewers benefit. (?? maybe?? someone with real good eyes :)) https://yedlin.net/DebunkingHDR/index.html https://yedlin.net/DebunkingHDR/index.html maybe my interpretation is wrong, but i dont think it is far off if it is. specification differences and differences in human perception are not the same thing