Once in a while you may want to print your photography, whether a picture that you’ll frame, a greeting card to send friends, or a calendar, book, or other photo project to order online.
Because it’s challenging (if not impossible) to print some of this stuff at home, it’s best to leave the printing to pros such as Apple (using iPhoto or the Photos app), services such as mpix.com, your local camera store, or even Costco. The downside is that if you use an image-editing app such as Photoshop, Elements, or Lightroom, the colors in your printed pictures may not look like you expect, as you can see from the three versions of the tulip image at right.
The problem is rooted in the difference between the color space of…