An LCD monitor used for graphics should be calibrated at least once every 200–300 hours (in ordinary use, once per month). When using a monitor for graphics, stable colour can be maintained at all times by conducting calibration at a frequency of once every 200–300 hours. We recommend at least once a month, and manufacturers, such as Eizo, concur with this: Regardless of the initial state of any factory calibration, all displays drift over time, and should be recalibrated on a regular basis. (That is not to belittle the intentions of the ISF or THX - it is just simple fact that no factory calibration can ever be accurate, as the same settings are applied en-mass to all TVs of the same model, as dictated by cost.) Unfortunately such settings are often nothing more than marketing gimmicks, as rarely are they accurate. Unfortunately, nearly all displays are provided with very poor factory calibration out of the box, especially home TVs which tend to come with over saturated colours, widely inaccurate gamma/EOTF and colour temperature, and incorrect black and white levels, with such settings aimed at looking pretty in the TV show-room.īeyond this, many TVs have what are claimed as professional calibration pre-sets, such as ISF or THX. Therefore, display calibration is required so that the viewed images match as closely as possible the colour standards expected by the images being viewed, as such video standards define how an image should look on any given display. It is equally true for Medical applications, where medical image assessment requires critical display calibration. This is true for displays used within film and TV productions, as well as for the home consumer, be it Gaming or Home Cinema use. The real requirement for display calibration is actually very obvious, as without it you will never see images as the production team, specifically the DoP & Colourist, intends.
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