Re: [BULK] - Re: Match CMYK doesn't work.
Re: [BULK] - Re: Match CMYK doesn't work.
- Subject: Re: [BULK] - Re: Match CMYK doesn't work.
- From: Courtney Schwartz <email@hidden>
- Date: Mon, 14 Feb 2005 14:44:59 -0500
Yeah, it's as Roger says: some of the file formats you want to use are
*inherently* RGB-only. Kind of like GIFs assume indexed color, BMPs and
PNGs assume that they will be displayed on a monitor only. JPEGs can do
CMYK, but some apps will ignore the color rules, making it effectively
useless anyways.
(Plus, if you are doing print, you will probably not want a file format
with compression artifacts and dulled blacks/whites. Those defects are
a lot less noticeable on screen because the light is more scattered;
once printed, they can look pretty bad.)
If you want to be sure that you can use a CMYK profile, you will want
to select a format that is traditionally used in print.
TIFF is one of these. PSD, EPS, and PDF are some that can also do CMYK.
(Note that I say PDF *can* do this; it won't necessarily be all CMYK
if, for instance, you have some images inside it that are RGB. You'll
want to check your flattener/export settings for rules on color space
conversion.)
As an aside, I would recommend Photoshop for a different reason: to
test the results of your script. It has a lot of advanced color
handling, so you will, in theory, be able to see if your script is
giving you the results you want.
Courtney Schwartz
On Feb 14, 2005, at 1:44 PM, Roger Howard wrote:
On Feb 14, 2005, at 7:07 AM, Christopher MJ Tangora wrote:
Sorry bout not posting the script...
This problem script was just the default "Match to CMYK" script that
came with OS X. I re-ran the script this morning on a number of
different formats (jpg, bmp, pdf, png, raw & tif), but the only
format that I could get it to work on was TIFF. Is this right? Is
the only format you can alter via ColorSyncScripting a TIFF file?
If this is the case, then I might just need to get Photoshop. I was
hoping to find a way to do JPEG's and EPS's. Anyways, here's apple's
applescript. If it works for JPEG's on someone else's machine can
you let me know?
Ahh ok, this makes some sense.
JPEG, BMP, PNG, RAW (?) don't appear to be supported by the OS for
CMYK (try generating a CMYK version of these files in Photoshop and
opening it in Preview).
CMYK JPEG is not standard, but Photoshop has done it for a long time,
so some (few) apps support it.
BMP and PNG don't have any official CMYK support that I know.
PSD and TIFF should work, at very least.
It's not a problem with the script, it's just with what you're trying
to do. Photoshop will allow you to save JPEGs as CMYK (and TIFF and
PSD of course), but not the others. I'd rethink what you're trying to
do and why.
Anyhow, for the normal cases - TIFF output - this script should work
fine.
Best,
Roger
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