You can use Curves to lighten up dark areas overall or to improve the midtone range of you images if they are too dark. By using an S-shaped curve, you can improve contrast by darkening the shadows and lightening the highlights. You can add contrast to your image using the Curves tool (Image > Adjustments > Curves). Increase contrastĪ common issue when converting a color image to black and white is a loss of contrast. Use the Black and White Adjustment feature in Photoshop for the most control over the results. Nor do we recommend simply changing the image to grayscale, as grayscale won't produce the best results either. What about desaturate or grayscale?Īnother option is the D esaturate feature (Adjustments > Desaturate ) but we don’t recommend this option due to its lack of control. This means you'll need to work on a RGB version of your image before converting it to CMYK (See the steps at the bottom of this article for that). If the Black and White adjustments option is greyed, out it's likely because your image isn't in an RGB color space. This feature is only available for images in an RGB color space. By adjusting the controls, you’ll see a real-time preview of your changes and can control how colors translate to the black and white image. T o do this we recommend using the Black and White Adjustment feature in Photoshop (Image > Adjustments > Black & White). One way to minimize color shifts in black and white images is to remove all color from your image. Remove all color from your image Use the Black and White Adjustment feature in Photoshop That way you can save the originals for other uses. Before you beginĪlways duplicate your originals before you begin editing them. One thing you can do to minimize such shifts is to remove all color from your images, as explained below. Even Hewlett-Packard, the manufacturer of the industry-standard HP Indigo press, specifies an allowable amount of color shift for their digital presses. Getting a totally neutral image can be tricky though, as there's always the chance of a slight color shift. Most people wouldn't notice a slight color shift in a color image, but a color shift in black and white images is another story. The biggest challenge in printing black and white images using a four-color press is the potential for a color cast. This article explains how to prepare your black and white images in Photoshop when using our InDesign plug-in or the PDF uploader.
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