The difference between files Raw in 12 or 14 bit and PS 16 bit - is there a practical consequence?

I read that my Olympus Raw is 12 bit color (ORF) and my Canon is 14 bits (CR2). But in Photoshop, retouching to 16 is covered mostly in literature I've seen, and PS also has 8 or 32.    Is there a practical importance or drawback to the divergence between the 12 or 14 on one side and 16 (or 8 or 32) on the other?   This means anything really, for the average user of PS, I guess I'll become as I work at home a little more?  Is there anything else I should be aware of and adjust for?

It's a matter of ni-ni-peut-etre-peut-etre typical. The short version is that the RAW data are far from perfectly linear and may contain a large amount of data, which in fact do not contribute to visible pixels, because the human eye can not see these lines. This is why you need to "develop" in the first place. Since you already reject the evidence for other data and remap value ranges, the output has a much lower effective loyalty. Not a limitation remaining loyalty, you work more bit depth of models such as 16bpc or 32bpc, which may contain these ranges of values, but not necessarily use the theoretical full spectrum to offer these ranges of colors. When it becomes really relevant is all successive treatment - due to greater mathematical precision, higher bit depths are less susceptible to unintentional dithering or other artifacts due to premature quantization of the values. ultimately however, it becomes very much a question of what you plan to use the exit for. If your, say, 5000 x 3000 px RAW image ends up as a web of 640 x 480 graphic, there is little or no harm to work in 8bpc, since obviously all the web usually uses 8-bit images...

Mylenium

Tags: Photoshop

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