The first image is the actual sky image, the second is a print of those sky. The other two are demo prints, you can clearly see vertical lines on all of them. On an actual image print it looks a lot worse than on a print of a solid color like in the demos.
So far I tried installing new drivers, different OS's, calibrating color from the printer and driver, changing print quality from the driver.
JoeClark replied
425 weeks ago