I couldn't figure out for the life of me why when I printed a photo in Photoshop CS6 that the colors never matched what was on screen. While a better monitor and printer and calibration may help some, those aren't the reason for the disparity. In Photoshop CS2 and CS5.1, I don't have any problems.
Come to find out, whenever I changed how the colors were managed in Photoshop CS6 on the Print Settings window, either to "Photoshop Manages Colors" or "Printer Manages Colors," the Canon printer "Color Correction" settings would change to incorrect options. If I selected "Photoshop Manages Colors," then the Canon "Color Correction" setting would change to "Driver Matching" -- after I had changed it to "None." If I selected "Printer Manages Colors" then the Canon "Color Correction" setting would change to "None" -- after I had selected "Driver Matching." It should be the other way around. But why Photoshop is causing the Canon driver to change at all is still a mystery. Sometimes, not matter what, the color settings would always change to "Driver Matching." That was okay when I used "Printer Manages Colors."
I uninstalled and reinstalled the Canon Pixma iP4200 printer driver at least 3 times using the most recent updates from Canon's web site, but I always got the same results -- bad, bad, bad. I finally found the original Canon Pixma installation disc and installed from that. Finally, it worked correctly. I noticed that Canon changed the Color Correction procedures in the updated driver versions -- procedures that are more confusing. The original version is simpler to set up, but is still a little confusing. When I thought that I should turn "ICM" on or off in the printer driver setup was just the opposite of what I should have done. I also learned not to trust the Canon driver's Print Preview. When the preview looked like there were incorrect colors, the actual printout had correct colors.
I don't know how much photo paper and ink I used trying to figure out what was wrong. What's really disappointing is that updating the Canon Pixma driver caused me all kinds of problems and confusion. But I'm a "happy camper" now.