Color shift from monitor to desktop printer to final print?

If you are designing or color correcting a photo using a monitor as your color reference, we recommend that you do NOT adjust your original based on your desktop printer output. Modern equipment using ICC profiles tend to do a good job, but please look at the printed proof from our machine. Printing output by any device can’t match the range of color available on a monitor. PMS spot colors are handled separately, so please set them in the file rather than as CMYK or RGB values.