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iAzriel
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S2719DC, HDR local dimming flickering

I recently got this monitor and I was really happy with it. Excellent vibrant colors and brightness. Regarding HDR it has 4 options. 3 of them, Desktop, Movie and Game are pseudo HDR and only Reference is the true HDR mode that takes advantage of the HDR 600 certification. 

When enabling Reference HDR preset, the 4 vertical dimming zones are enabled. But I have an issue with the bottom part of the second from right dimming zone. Upon dark scenes in games especially, both with PC and PS4 pro over HDMI, it flickers and flashes like crazy. This does not happen if I move the camera and position the same scene or any scene to another dimming zone. Is this a monitor defect on the specific area or something else? 

I would really much like an answer on that, cause the monitor is really good but this HDR issue is a deal breaker and cancels the main selling point of this monitor which is HDR 600.

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6 Replies
Moderator
Moderator

Re: S2719DC, HDR local dimming flickering

For my internal notes, click my name and private message me the monitor service tag number.

 

Our HDR (High Dynamic Range). monitors utilize our proprietary Dell HDR. This "Dell HDR" is the term used to describe our Dell line of monitors that can receive and process an HDR signal. But they do not adhere to the retail HDR specifications.

 

Read through page 28. When connected via HDMI, the Menu- Display- SmartHDR offers four HDR choices. When gaming, choose Game HDR, not Reference. Then, post a video of these 4 vertical dimming zones showing the issue.

 

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iAzriel
1 Nickel

Re: S2719DC, HDR local dimming flickering

Thank you for your answer. I understand the four presets, but the Reference mode was the best all around, without me having changing mode every time. Plus, I really prefer the extra brightness of this mode, compared to Desktop let's say who is noticeably dimmer. Moreover, in games let's say, Game HDR adds some sharpening when I don't want to. As I said, reference was the best all arounder. I cannot upload a video, but I can show you some pics with the issue in the specific area of the monitor.

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This is Reference mode and you can see the issue in the bottom right. Now, this is static image from Windows Explorer. Observe how it lights up when I move the cursor in the black spot. Imagine in games, if a dark area inside a cave let's say is depicted in that specific area, due to minor camera movements also, this part of the monitor starts to flash and flicker. If I move the dark area to another zone, there is no issue at all...

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Moderator
Moderator

Re: S2719DC, HDR local dimming flickering

Based on those pictures, that display passes our overall uniformity specification. To be sure, post pictures of the colored (gray, red, green, blue, black, white) screens while running the (disconnected from PC) Built-in Diagnostics, page 38.

 

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iAzriel
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Re: S2719DC, HDR local dimming flickering

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iAzriel
1 Nickel

Re: S2719DC, HDR local dimming flickering

Once again though, the problem is not with static images or movies. The problem appears with Reference HDR preset in the part of the screen I showed you in Windows Explorer were it flickers like crazy in dark scenes during gaming or it remains dark in Windows Explorer again as depicted.

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Moderator
Moderator

Re: S2719DC, HDR local dimming flickering

We have to see it fail. You need to figure out how to record the issue and upload the video.

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