Originally Posted by Archibald1
Not in and of itself, no it isn't, but the only signal with HDR that you can send to these projectors at 50/60hz in 10 or 12bit is a 4:2:0 one due to, yup, limited bandwidth.
That is what I showed too with my x-men stills. It can be attributed to lack of bandwidth simply because, a higher bandwidth would allow the source (Oppo or Panny in my case both with fantastic VPUs) to up-sample the chroma from 4:2:0 10 bit HDR to 4:2:2 12bit HDR, instead of only being able to send the fully compressed signal and have the crappy rendition the projector provides from 4:2:0 10bit HDR to RGB. These devices have been shown to do a superb job of the final up-sampling of a 4:2:2 12 bit HDR signal to RGB. Just look at a 24hz HDR UHD bluray! Lovely gradients.
How the projector handles full level up-sampling of HDR chroma is something that is related but seperate and what I am hoping Sony can, and will fix with an update or two. I mean even if it took a couple of attempts I wouldn't mind because at least they would be trying and I wouldn't have that horrible abandoned feeling I sort of do at the moment.
I also think the gamma/pq curve used is waaaay off and the VPU cannot do much with the all the effort of up-sampling the 4:2:0 picture to RGB without horrible artifacts and the HDR gamma/pq curve in tow.
Give it the SDR gamma and the issue is basically non existent.
So to me, if they update the firmware to use a different gamma/pq curve that prioritises picture quality over simply trying to artificially wow with HDR for the signal, and provided the VPU is actually up to it, then they could sort this problem that is totally of their own making, for basically promising too much for the hardware installed just to get a spec on the sheet that is deemed as 'futureproof'.
It doesn't matter if it is considered niche, they included it in their product features and specs and sort of said , 'hey your new 10 grand projector is future proof with this new fangled 60hz HDR video mode and it will be so smooth and realistic'.
It simply is not at all like that description at all and that is what wrangles. If they had said something like, i don't know, um... 'we have included a future mode for the sake of ability to display and not leaving you completely in the lurch with current games and streaming and also future UHD blurays, but the image quality is not as good as the rest but that is down to a limitation in video bandwidth we are afraid'..... then it would have been easier to swallow.
But the fact they have described this very mode as smooth and realistic just smacks of ,well, complete inaccuracy.
Little over a year ago I bought a RS600 to replace my VW600 . It was supposed to be future proof , the latest HDR features, noise free, contrast that was miles ahead, brighter, and resolution that as good as 4K . I was a little reluctant because reviews had it a shade behind resolution wise, some hints of shimmer or noise, and motion not as good as Sony . The forum discussion convinced me to go ahead with the RS600 on the basis of it being none of that and well, it was a little cheaper than the VW675 option by a few thousand . Well, it was a lot of good no doubt, great contrast, fantastic 3D , plenty bright , great color and so on . What it did have that bothered me was noise in the image
and I could not get rid of it . The same ones that told me it wasn't there denied it and then collectively attacked me in that thread for suggesting it was even there. Apparently I did not have a clue how to set it up properly, had the settings wrong, I was called all kinds of nasty names , even accused of "misleading" others into believing it even existed .
It was never JUST grain as was suggested, it was a byproduct of the grain and e-shift process. Well the noise was there all along , now universally discussed and accepted , long after I was banished from even discussing it .
Not happy with my treatment or this noise , I decided to purchase a VW675 , compare the two myself. I'm not getting into a long winded comparison of the two. just suffice it to say the VW675 had the image I preferred and decided to keep . I kept it for the features I desired and liked most .
I sold the JVC and took a 40% hit . They already released a new model with upgraded HDR and other features , did not offer this to the outgoing model . Sony actually did offer the upgrades to their older models with poor HDR implementation , JVC flat out refused so I had a disabled model only 6 months in .
Point is , nothing is future proof and not always as advertised . Most projectors should give you 90% of what you want and 10% of what you don't want, if your lucky. Even the best are not perfect and certainly never future proofed.