About
RGB and CYMK
Many graphics
software programs give you the choice to work in either RGB
or CMYK. These are called "color spaces". Scanners,
digital cameras, and monitors create images using combinations
of just three colors: Red, Green
and Blue (RGB). These are the primary colors
of light, which computers use to display images on your screen.
Printing presses print full color pictures using a different
set of colors, the primary colors of pigment: Cyan
(blue), Magenta (red), Yellow
and BlacK (CMYK). This is "4-color process"
or "full-color" printing that is used in the majority
of the magazines, sales literatures, and catalogs you see
daily. At some stage your RGB file must be translated to CMYK
in order to print it on a printing press.
It's
Best to do the RGB-to-CMYK Conversion of Your Images Yourself
You will have more control over the appearance of your printed
piece if you convert all of the images from RGB to CMYK before
submitting them to us. When we receive RGB images, we do a
standard-value conversion to CMYK, which may not be perfectly
to your liking. We want you to be happy, so please, take the
time to prepare your file properly. We cannot be responsible
for sub-par results if you furnish your images in RGB. Even
though monitors always use RGB to display colors, the colors
you see on your monitor will more closely match the final
printed piece if you are viewing them in the CMYK color space.
Be aware
that it is possible to see colors in RGB that you can't make
with CMYK. They are said to be "out of the CMYK color
gamut". The RGB-to-CMYK translator gets as close as possible
to the appearance of the original and that's as good as it
can be. It's something that everyone in the industry puts
up with. So it's best to select any colors you use for fonts
or other design elements in your layout using CMYK definitions
instead of RGB. That way, you will have a better idea of how
they will appear in your printed piece. Here's a common example:
many programs translate the 100% Blue in RGB into a somewhat
purple-looking color in CMYK. We recommend a CMYK value of
100-65-0-0 to get a nice clean blue. Working in the CMYK color
space allows you to select the CMYK recipe, or "screen
build", that gives you the results you want.
Converting
to CMYK Color Space
Here is a list of several common software applications with
instructions on how to make sure you are working in the CMYK
color space. If your software application or version is not
listed here, don't worry. Most of these instructions will
apply to all versions of a application.
Microsoft
Publisher 2000
Microsoft Publisher defaults to RGB. It is easy to convert
everything to a CMYK color space or to start a new document
using the CMYK color space.
Use
the following menu options: Tools/Commercial Printing Tools/Color
Printing and select Process colors (CMYK). Please note that
all images incorporated into a layout need to be linked
and not embedded in order to maintain the CMYK color space
within the image. Using the following menu options does
this: Tools/Commercial Printing Tools/Graphics Manager and
highlight the embedded image. Click Link and click Browse
to locate the original file and link to it. You will then
need to send both the images and the layout file to us for
printing.
Adobe
Photoshop 6
If the file already exists select the following menu options:
Image/Mode/CMYK When starting a new file select CMYK in
the Mode drop-down box before clicking OK.
Corel
Draw 9
Select each object you want to convert. Select the Fill
tool and click Fill Color Dialog. Make sure the Color model
is CMYK. For each object with an outline: Select the Outline
tool and click the Outline Color Dialog. Make sure the Color
model is CMYK.
Adobe
Illustrator 9
Use the following menu options. For an existing file select
Edit/Select All and then Filter/Colors/Convert to CMYK.
For a new file, select File/New and select CMYK color for
the Color Mode.
Quark
Express 4.1
Use the following menu options: Edit/Edit Colors/Show Colors
in Use/Highlight Color and click Edit. Change model to CMYK
and deselect Spot color. Remember to send us your layout
and linked images!
Adobe
InDesign 1.5.2
Use the following menu options: Window/Swatches and Window/Color.
Double-click color in Swatches, change Color Mode to CMYK
and color type to Process. Any colors created in the document
that are not in the Swatches palette, need to be changed
to the CMYK color space. Select each object you want to
convert and make sure the Color palette reflects the CMYK
percentages. Click top right arrow in the palette to change
to CMYK if necessary. Remember to send us your layout and
linked images!
Adobe
Pagemaker 6.5
Use the following menu options: Window/Show Colors. Double-click
"colors" in palette and select Model to be CMYK
and Type to be Process. Please note that Pagemaker does
not successfully represent CMYK color on the monitor.
The following
programs do not have the capability to convert to CMYK.
Adobe Photoshop LE
Adobe PhotoDeluxe
Microsoft Word
Microsoft Excel
Microsoft Powerpoint
Microsoft Works
Microsoft PhotoDraw
Picture It Publishing
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