Check this, I created one of my most ambitious pieces of artwork, (the pic is huge) - (the background/border was black), and my monitor is dark. A customer alerted to me, before purchasing (Thank the Lord), that there were significant errors that I couldn't see in the black, as it was black on black, but one of my blacks were not dark enough, making it look terrible on a monitor that can be brighter! I don't know if that made sense, but, phew, my monitor slipped a fast one on me.
Ben
MessianicArt.com