Re: Dynamic range and bit depth
Re: Dynamic range and bit depth
- Subject: Re: Dynamic range and bit depth
- From: Andrew Rodney <email@hidden>
- Date: Wed, 06 Dec 2000 07:55:10 -0700
on 12/6/00 6:29 AM, Roger Breton at email@hidden wrote:
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I have to disagree with you, Andrew: dynamic range and bits are completely
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interrelated.
I guess we will have to agree to disagree.
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A 10 bit scanner can represent 1024 discrete levels (2 to the 24 power)
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which corresponds to a dynamic range of 3. 12 bits of data, on the other
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hand, yields 4096 discrete levels which is somewhere between 3 and 4, in
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dynamic range. 14 bits of data (2 to the 14 power) is all you need to
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accurately represent the 10,000 discrete levels of a dynamic range of 4.
I think your use of pure math is misleading. If your accounts are true,
EVERY 10 bit scanner would have a dynamic range of 3. Every 14 bit scanner
would have a dynamic range of 4. This clearly isn't the case. It's like
suggesting that because a 24 bit color file mathematically can have 16.4
million different colors, that's the case with all 24 bit files.
Andrew Rodney