I thought I put my thoughts on Oreo and my analyzing the dimming control on Oreo.
Okay, I been testing some footage of films, series, games on my 65” and wow, what a difference. Firstly, the picture is fantastic, it’s like I upgraded the TV and to a bigger size and after testing a few things out I come to this conclusion.
Blooming is way less than on my 55” I would say 50% less, as my torture test scene is from pan when the 3 dudes are sitting by a camp fire and it lights up the bottom black bar like a Christmas tree on most TVs I tested, but now its slight.
This one it came clear, the viewing angles are wider? Been a bigger TV it should be worse, but no its better as I have to go right off at an angle, so its clear this is not the same panel used in the 55” and 49” and because of this no calibration should be used from 65” to 55” or the other way round.
Now Oreo the good parts are that it boots faster, its faster on button pressing etc…, and Game mode now reaches 1300nits tracking from the old non-Oreo 800nits.
Bad part is the calibration controls are a nightmare and shouldn’t be, 4pt and below act very slight if at all when dimming is enabled, and when dimming is disabled the blue channel goes wild.
Now for the calibration part, its best if you can calibrate with the 10pt only and not use the 2pt, as when the dimming is doing its thing I found that it can swing all over the place when the screen is only showing 10% coverage to 100% coverage.
If you calibrate with dimming disabled and then enable it, then you have made things worse? Strange one that Sony did not see this, so anyway always enable dimming on medium for SDR and while displaying 10% windows adjust the 10pt but when you make an adjustment jump to a 100% window and see what the dimming is doing and you will find the Red channel as a life of its own, it will jump all over the place while the other 2 channels will mostly act right. What you will find on my 65” anyway that after all is done there was not much to do, but I improved the overall picture and HDR was another story, but much the same, but you keep to 10% windows , but at 40% brightness there is zero adjustments that would work to get the red channel down its just broke, the 2pt worked but upset the apple cart, so I leave it be and all is great.
So, here are two pictures of the dimming so you can see what’s going on.
First picture is tracking from 10% windows, keep an eye on the red channel.
Now, this is the second picture at 100% windows again look at the red channel as you can see its swapped position, so anything that using 50% of the screen it will be flat, and all measurements are at 0.4 delta error or below.
So, I a happy with this calibration and will post them up in a few days and I will be re-doing my 55” calibration in a few weeks as its packed up before selling it on in the classifieds and will post them up as well.