James,
As Tony says, if you’re getting the expected results when printing, then nothing need be changed from whatever approach you’re taking. Theoretically, the advantage of using Adobe Gamma is that adjustments that you make on the Adobe Gamma control panel will take into account the particular lighting conditions of your working environment, your own perception of colors, and your specific Dell P992 monitor (color variances among the same monitor model aren’t uncommon). It certainly wouldn’t hurt to run through the Adobe Gamma calibration process, using your Dell profile as a starting point but then saving the end result as a new profile such as "Dell P992 AG". That done, you can perform your own comparison and see which profile gives you the better result in matching the displayed and printed images.
Regards,
Daryl
Even if your Dell profile is accurate, it may not be accurate next month, or the month after, as components degrade and change value. You should probably be prepared to re-profile your display every month or so ( as necessary ). That means that you’ll be using Adobe Gamma, at the very least, for a long time to come.
🙂
Brent
