Re: Decimal precision in Photoshop's info palette
Re: Decimal precision in Photoshop's info palette
- Subject: Re: Decimal precision in Photoshop's info palette
- From: Graeme Gill <email@hidden>
- Date: Sat, 20 May 2006 17:03:47 +1000
Ken Fleisher wrote:
But why does the script always return decimal values when I read the
color
picker values from an RGB file? After all an RGB file uses a 255-step
notation, just like the 8-bit architecture. What am I missing?
Shouldn't the RGB values always be full integers? Why all the decimals?
Actually, I regard the way Photoshop (and lots of other applications)
handle RGB to be rather "backwards". CMYK is typically 8 bit too,
yet it's manipulated as 0 .. 100%, not 0 ... 256, so why is RGB
different ?
The trouble with using the actual device encoding
values to observe and set device values, is that they
vary so much. 8 bit, 12 bit, 16 bit - a number
in one encoding doesn't map to another. It's easier
in many situations to normalize the device values,
either to the range 0.0 .. 1.0, or 0.0 .. 100%.
The device value is then independent of the encoding.
Graeme Gill.
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Colorsync-users mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden