Tetratune Case Study

The team use a number of high-end displays and were looking for enhanced calibration to ensure their ‘Prosumer’ displays were as accurate as their ‘Enterprise’ broadcast spec displays. Although these displays have some form of inbuilt colour adjustment, the required accuracy over greyscale and colour representation when viewing drama or film content is critical. Any noticeable inaccuracies must be removed as this can cause clients to lose faith in what they are seeing.

Deploying highly accurate calibration for HDMI devices was considered cost prohibitive, particularly across the different suites, yet without it, clients may question the differences in monitors, even if slight. When using a projector, any odd shifts in skin tones or greyscale issues on a flat surface in scenes (e.g. walls or skies) may cause the client to think that there were unusual colours in these areas. In fact, it’s that the calibration is not accurate and using internal menus wasn’t enough, even ‘auto calibration’ provided in the display itself didn’t fix greyscale tracking either.

Having found this new solution, the team decided to use the Tetratune in their grading theatre where it has been used with a JVC DLA-RS4100 projector for both P3D65 and REC709 setups. Working closely with the Videworks team to make sure the product met expectations, the product slotted easily into the signal chain, with its HDMI connectivity and web interface allowing easy control. Its split screen feature makes comparisons a simple process. In addition, the team can load multiple LUTs for easy selection, use the bypass feature, and utilise a test patch generator built into the unit, streamlining the display tuning process.