The compression factor is something I hadn't factored in. Given how a lot of compression sacrifices the shadow's details the raising of the levels up to 100 mV might actually be preserving shadow data beside the lack of clipping. That's a good one to ponder. I too find the compression algorithms and science very intricate and almost Zen like when I try to comprehend the math involved.
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Posted by: bigfish@pacbell.net
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