iGen_DesignersGuide_lowres

If no embedded profile is detected when the file is opened, you may choose
one of the following options:
• Leave as is—will not embed a color profile into the image. However, for
operations that require a color space definition, Photoshop will use the
RGB or CMYK Working Space defined in the Color Settings preferences
(for example, when performing a Mode change between RGB and CMYK).
• Assign Working Space—assign the profile of the Working Space defined
in the Color Settings preferences. Select this option when you want to
consistently use one working space or if the working space matches the
source space of the received file.
• Assign Profile—assign a specific profile if the source color space is known
when the image file is opened.
Talk with your printer about which workflow to use. Assigning the right color
space from the start will give you a better idea of how the file will look in
print. Remember to implement monitor calibration and characterization as
guided by your printer.
Design
Digital Printing Reference 69