Re: Which free software could acquire 48 bits color depth pictures from a scanner ?

John McWilliams wrote:
Ray Fischer wrote:
nospam <nospam@xxxxxxxxxxxxxx> wrote:
NeilMolon

I guess that's why everyone is raving about CS4 finally supporting some 32-bit
math in some of its functions.
actually they're raving about cs4 being *64 bit*.

Too many people with too little understanding.

32-bit pixels is different from being able to handle a 64-bit address
space. Whining that PS cn't do 32-bit pixels for all functions is
silly given that there's no output device that can handle even a
16-bit range.

I print to an Epson 3800 in 16 bit mode out of Lightroom. But I also get your point about whining.

The point about data precision in PS is not about output. It is about conserving information over a few to dozens of transforms (operations) of the data without introducing artifacts due to LSB losses or padding in each transform such that when the data is eventually reduced to the dynamic range of the output, all (or at least most) processing artifacts are lost in the truncated or rounded data only in that very last operation.

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