I can tell the difference between blu ray and 4k discs from 4 metres away on a 50" LCD TV. Tell tale sign is the colours. 4k are more vibrant and colourful. Not all about image quality. Now I've got a 55" OLED you can definitely tell the difference a lot easier.
I wouldnt start that arguement no one will win it.
It's actually an argument that is provable with mathematics as far as resolution goes, Rayleigh's equations show the maximum perceptible spatial resolution of an ideal lens based on distance from the object and distance between the pixels.
I assume that you are referring to wide colour gamut, which is something that does produce a subtle improvement in the range of colours, but it isn't really related to this topic of bitrate related video quality, we are comparing two 4k video sources.
I've got about 100 4k Blu-ray's, so that argument doesn't really wash.
Obviously Netflix is inferior to a disc, but I'd rather watch a lower bitrate 4k HDR Netflix stream, than most standard 1080p SDR Blu-ray's.
The codecs have moved on a lot.
Yes the codecs have moved on a lot with HEVC et al but nonetheless I considered the bitrate on Netflix to be borderline as it was and this took it to below the minimum acceptable level for my subjective perception of the image quality with more artefacts such as macroblocking in the images appearing. I actually subscribed to the 4k service in the first place just to get an acceptable HD experience as their 1080p streaming wasn't up to scratch. As we both seem to agree video quality is subjective, but reducing quality because demand went up is a poor move on their part, it's like ISP's that do dodgy traffic shaping during peak times because they are too cheap to upgrade their network infrastructure.
