Re: new to color management and have a few questions
Re: new to color management and have a few questions
- Subject: Re: new to color management and have a few questions
- From: email@hidden
- Date: Fri, 24 Jan 2003 08:57:10 EST
In a message dated 1/24/03 2:39:31 AM, email@hidden writes:
>
im new to color management and have a few questions. if someone could
>
help it would be appreciated.
>
>
(1) is adobe rgb (1998) a device independent colorspace.
Yes...
are all rgb
>
color spaces device dependent?
Not the abstract ones like sRGB and AdbobeRGB...
if adobe rgb is device dependent then
>
how come equal quantities of rgb make gray in that color space?
Because its device independant...
>
>
(2) when i use color sync color management how is that different to
>
using another color management engine.
You are mistaking an architecture for an engine... one is the road you drive
one, the other is the car you drive on it with. ICM2 or ColorSync is an OS
level color architecture; CMMs are engines that function within that
architecture, or within applications that do independant color management.
different in this sense: if i
>
embed a profile in an image is it the profile that is getting embedded
>
>
or is colorsync embedding a pointer to a printer profile residing on my
>
>
computer, for example. ie, if i open the file at home will it use the
>
same profile i used in the office?
The whole profile is being included in your file's header... if its a tiny
profile like AdobeRGB its no problem; if you embed a high rez CMYK output
profile, the size of the header may now exceed the size of the image content
in the file.
>
>
what happens if someone with windows opens a file that has a colorsync
>
>
profile embedded?
Its actually an ICC profile, and since Windows uses the ICC standard, it will
open it just fine...
>
>
(3) how do i change the name of the profile in the photoshop color
>
management menu? i purchased some profiles from profilecity.com but
>
they do not use the names i want in that menu.
You will get in trouble if you change the external file name, as it will no
longer match with the internal description, and show under different names in
the finder and in lists. There are soem freeware utilities to correct this...
>
>
(4) id like to create some profiles using profilecity.com for the
>
overseas printers we use. however i know nothing of the process they
>
use and it is unlikely i will be able to obtain the information. the
>
graphic design department does not have any information that would be
>
helpful either. we print on paper, wood, and cloth. any suggestions for
>
>
color managing such a process would be welcome.
You are lost in the jungle and would like someone to tell you exactly how to
get back to camp without telling them the necessary landmarks to figure out
where you are... not possible: garbage in, garbage out.
>
>
btw, the graphic designers do not send separations. i think we need
>
would need the ppd for the postscript printer they use overseas to be
>
>
able to do that, correct? and we dont have access to it).
Get serious, or live with what you get.
>
>
currently the way color is handled is:
>
>
one graphic designer works in adobe rgb 1998 and and sends files
>
overseas that way, or doesnt do any color management. all designers
>
use coated pantone chips (i think for paper). i think it is used for
>
all types of material we print on (paper, cardboard, wood, and cloth).
>
>
im hoping to purchase the peachpit press book from bruce frazier on
>
color management when it is available.
Sounds like it would be a worthwhile investment for you... but it won't stop
you from needing information before you can control color.
hopefully it will help answer
>
some of the questions my books and apples colorsync web site didnt
>
resolve.
Definately...
C. David Tobie
Design Cooperative
email@hidden
_______________________________________________
colorsync-users mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/colorsync-users
Do not post admin requests to the list. They will be ignored.