Kyle Gordon wrote:Hey John (and everyone else too),
I'm not meaning to take a side as to whether what we are seeing is reasonable to see, whether for technical reasons like underexposure, or simply for fair arguments of price.
Just to help the discussion, the weird patterned stuff is visible in that shot on the crowd where they are wearing black. It's also only visible on YouTube when played back on the highest quality setting, 2160p. The pattern and resulting interference patterns are invisible on YouTube at smaller resolutions, because the underlying pattern in the image is lost in YouTube's transcoding for resizing.
Hello Kyle.
So here's what I can reproduce after your suggestions.
I can see a grid in the shadows when looking at 2160 in a smaller window. But I can only see it at 2160 in a non 1920 window.
This is NOT FPN.
- 2160_reduced.jpg (209.31 KiB) Viewed 10536 times
This is the same frame displayed at 1920 full screen within YouTube's player. The grid doesn't show.
- 2160@1920.jpg (350.33 KiB) Viewed 10536 times
And for variation, here's the 720 version, as it appears in my browser (no grid for me)
- 720_reduced.jpg (174.19 KiB) Viewed 10536 times
That to me says it's not about Youtube's compression hiding it, it's more to do with the scaling you choose.
This seems very similar to the pocket issue, as already discussed. I personally don't see this happening much because most of my own personal work is displayed at 1920 (Television). And I have seen this issue on the Sony F55.
For reference here is the extremely long thread on Sony's forums. It looks like the exact same issue. When I cam across it in my use of the F55, the same ideas applied. It shows up in preview monitors that aren't scaled to your viewing size, but on final render to the standard resolutions (like 1920 displayed as 1920) it disappears.
http://community.sony.com/t5/F5-F55/F55 ... d-p/201051From memory too with the pocket, BM did release a firmware update that improved the "grid" issue in one of their earlier versions of firmware. I've never had the problem there either, but once that firmware update went out, it seemed to stop coming up as an issue as much. I have also seen the grid happen on the display of the BMCC2.5K in certain flare situations, but it never makes it into my finished work, hence the constant discussion about scaling.
To me, and I don't have a lot of personal experience with this issue, it looks like a similar problem that pocket users have been dealing with (and Sony!). There's this thread (I just did a search on pocket grid)
viewtopic.php?f=2&t=12961&start=50#p155873 and in it they eventually talk about V1.8 offering an improvement to the grid like artefact. The other workaround also involved doing a 1 pixel offset in Resolve. Has anyone tried that ?
The only difference here is that the grid in the pocket (and Sony) was introduced most easily on flares (in the blacks) whereas this is happening in non flare situations.
jb