A question that is rarely asked, but in reality is critical for any display, is how well calibrated is the display AFTER calibration..?
Just because you have just performed a calibration and the verification show the displays is now accurate, is it really?
Calibration Accuracy - Post Calibration
Obviously, any display will drift in time, and so will require re-calibration, but that is not the question here. The question is: immediately after calibration, and after the calibration has been verified to be accurate, is the display now REALLY accurate when displaying real images/footage?
You may think this a stupid question, as the display has just been calibrated, and verified to be accurate...
But, when profiling and calibrating did you use any of the compensation options within ColourSpace? For example, did you use Drift, or more specifically the Stabilisation options?
If the answer is Yes, you must now realise that the display was only accurate because of the use of those options, and when playing real footage will not have the same corrections applied, and will immediately become uncalibrated.
This is especially true of displays that require the use of the Stabilisation option (although also true with Drift, to a lesser extent), as the insertion of black frames after each real calibration patch allows the display to cool, preventing thermal instability.
Obviously, when in real use, such displays will not have regular cooling periods, and will immediately suffer thermal instability, especially if the display is being used in a colour critical environment, such as for grading, as the same image/scene will be held on the display for extended periods, causing thermal instability as the display screen heats up.
This means displays that require the use of Stabilisation Patches for calibration should be treated with caution if being used in colour critical grading environments.
