Re: Lab values with a decimal
Re: Lab values with a decimal
- Subject: Re: Lab values with a decimal
- From: Thomas Richard <email@hidden>
- Date: Mon, 09 Apr 2018 13:13:57 +0200
>Thomas Richard wrote:
>
>Hi,
>
>> Same thing for greens: up from 0/135/0 to 0/255/0 the a* is -128. Values of
>> 136G an
>> above are imaginary colors.
>
>sorry, this isn't true. 128 is an arbitrary limit imposed by particular
>computer encoding (i.e. 8 bit L*a*b* encoding). There are perfectly real
>(i.e. within the spectrum locus) colors with a* or b* values outside
>the -128 to 128 range.
Yes i know, and I verified that already by eye for real life yellows above
b=128.
But do you really think, that there are almost as much greens beyond -128 a*
than within?
MfG
Thomas
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