data echo
data echo
- Subject: data echo
- From: "John Swift" <email@hidden>
- Date: Sun, 18 Apr 2004 22:17:40 -0400
Can anyone explain to me how Lab mode retains the original control signals.
Since a file in Lab has no icc profile and the data is recorded in L*, a*,
b* by what mechanism does it retain a memory of the original RGB code that
produced the Lab code prior to conversion? For example
.
If I create two patches one RGB 1, 1, 1, and the other RGB 9, 9, 9, in Adobe
1998 and subsequently convert them to Lab, both patches will display Lab 1,
0, 0. However a second conversion to any other mode or space will, while
maintaining the Lab code 1, 0, 0 for both patches result in different data.
J Swift
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