Sometimes you might stop before then as it would be too bright, in which case you can use a 100% white pattern and set the light output to a level you want (such as 120 nits or 35 foot-Lamberts). With the Contrast, there is a similar pattern on AVS where you attempt to set contrast high enough to hide all the flashing blocks above video level 235, which is peak white. I chose YCbCr, as RGB looked far worse on material. This left me with the choice of either severely washed out shadow detail with an RGB signal, or missing the very darkest shadow detail with YCbCr output. If I switched to YCbCr 4:2:2 or 4:4:4 video output, then no matter how high I turned the brightness, video levels below 18 wouldn’t flash. Ideally, video level 16 should be barely visible when it flashes, and nothing below that should be there as 16 is the darkest level that should be encoded on consumer HD content. When I set the Oppo to output RGB Video Level content over HDMI, no matter how low I set the brightness, I couldn’t get video levels below 16 to stop flashing. The first issue that came up was trying to set the brightness correctly using a PLUGE pattern. The test pattern source was the AVS HD 709 disc that anyone can download from the AVS Forums website for free, and measurements were done using ChromaPure calibration software and an X-Rite i1DisplayPro which has custom offsets for different display types, including LED lit LCDs. To test this, I went ahead and calibrated the HDMI1 input using an Oppo BDP-93 Blu-ray player as the source at 1080p resolution. With its multiple HDMI inputs, speakers, and headphone jack, the EW2420 is specifically designed to be used not only as a computer display, but also for your video game system, Blu-ray player, or cable box.
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