If you are preparing your image to be printed on a commercial printing press, most printing companies will request (and some require) that you perform your own RGB-to-CMYK conversion. It is indeed a good idea for you to take control of this conversion, because it ultimately allows you to control the final output. In Photoshop CS3, you can use preset color profiles to convert images from RGB to CMYK or you can designate a custom RGB-to-CMYK profile. Both options are covered in the following sections.
Choose the Proper File Formats and Simplify Your Print Images You can be confident thatyour images will be easily and accurately processed (RIPped) in a commercial print environment, when you select one of several file formats optimized for printing. In addition, simplifying your images will further improve the RIPability of your images.
If you perform a Save As to create a print image with the following characteristics, what file format are you using?: Flatten Layers, Remove Alpha, Save with IBM PC Byte Order, and No Compresssion.
Print from Photoshop to a High-Quality Ink-Jet Printer or Proofing Device When printing to high-quality inkjets, be very clear about your intended use of that device (final output versus proofing), and the color space of the image you are sending and where and how the gamut conversion is occurring, whether through Photoshop (usually preferred) or through the printer driver.
Even prior to opening any RGB images in Photoshop, assign the RGB and CMYK working color space profiles you intend to use. How do you decide this?
Create a Soft Proof You can create a soft proof to preview your images on screen to see how your images will appear when you print them.
The accuracy of your soft proof will depend upon having a calibrated monitor and properly specifying output conditions. What’s the best way to go about this?
Convert Finalized Print Images from RGB to CMYK If you are preparing your images for final output on a commercial printing device, you will want to convert your images to CMYK using a working CMYK color profile for the final output device and paper on which you will be printing your images.
Where do you indicate to Photoshop the type of printing press and paper on which you will be printing your images?
Choose the Proper File Formats and Simplify Your Print Images You can be confident thatyour images will be easily and accurately processed (RIPped) in a commercial print environment, when you select one of several file formats optimized for printing. In addition, simplifying your images will further improve the RIPability of your images.
If you perform a Save As to create a print image with the following characteristics, what file format are you using?: Flatten Layers, Remove Alpha, Save with IBM PC Byte Order, and No Compresssion.
Print from Photoshop to a High-Quality Ink-Jet Printer or Proofing Device When printing to high-quality inkjets, be very clear about your intended use of that device (final output versus proofing), and the color space of the image you are sending and where and how the gamut conversion is occurring, whether through Photoshop (usually preferred) or through the printer driver.
Even prior to opening any RGB images in Photoshop, assign the RGB and CMYK working color space profiles you intend to use. How do you decide this?
Create a Soft Proof You can create a soft proof to preview your images on screen to see how your images will appear when you print them.
The accuracy of your soft proof will depend upon having a calibrated monitor and properly specifying output conditions. What’s the best way to go about this?
Convert Finalized Print Images from RGB to CMYK If you are preparing your images for final output on a commercial printing device, you will want to convert your images to CMYK using a working CMYK color profile for the final output device and paper on which you will be printing your images.
Where do you indicate to Photoshop the type of printing press and paper on which you will be printing your images?
Converting RGB to CMYK in Photoshop
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