Quote:
Originally Posted by cjake
It is the same with the UB820.
What I found is that metadata is sent in SDR/BT2020 mode if the display supports HDR. If the display does not support HDR but supports BT2020 no metadata is sent.
I have an HDfury Vertex that reports the metadata string. The metadata reports that the signal is EOTF1. HDR (PQ) is EOTF2. EOTF1 is HDR Luminance Range but does not follow the PQ curve. If you think about it that is what the HDR Optimizer is doing; it is tone mapping to SDR/BT2020, but retaining the original luminance range of HDR.
I have a 2015 model JVC RS500. It does not switch to its HDR Gamma when receiving this EOTF1 metadata. It does report receiving HDR in the Information screen even though I need to switch to my SDR BT2020 picture mode with Gamma 2.4 to get correct color.
Your projector must be seeing the EOT1 indicator in the metadata and assumes it is HDR and switches to HDR mode, even though it is not PQ so an HDR Gamma should not be applied.
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Thank you for that info. It makes sense. I guess I will make a profile on my RS500 that includes SDR.2020 with 2.4 gamma. I will have to select it manually on the remote. I am also using the Vertex with my JVC RS500 that is set up to switch my custom curves automatically.
Thanks