I recently switched my 1080 LCD for one of last years 4K OLEDs, so have only recently seen 4k and HDR (High Dynamic Range) content in irl. My understanding was that the improvement from 1080 to 4k was modest, and the real improvement was with HDR over Standard Dynamic Range. Watching the Blu-ray (1080 SDR, upscaled to 4K) of Interstellar and it looked every bit as incredible as Planet Earth II on netflix (4k SDR). My iTunes version of the Nolan Batman movies are all in 4K HDR (free upgrades, thanks apple!), and I've got to say, not too impressed with the HDR part. To me, it kinda looks like someone just dialed up the saturation and contrast sliders on a regular SDR broadcast. Not a very appealing image at all, and it made me look to see if I could turn it off, as changing the picture settings on the telly to compensate makes any non-HDR content look washed out and flat. It's not the increase in specular highlight brightness, but the OTT saturation that irks. My telly isn't calibrated, and this is my early impressions only, but I wondered if the appeal of HDR movies etc was similar to when photographers first started pushing the unnatural limits of HDR landscapes etc where people (in a wider sense) gravitate to the most colourful images, without consideration of the accuracy or subtlety of tone. Are photographers more sensitive to this boost? Have you seen, and do you like HDR content?