Productivity or gaming perspective is a good question, I was more discussing in terms of gaming but productivity does change things possibly although I don't do my work on the 48cx I do double it up with multiple browser windows or Ytube screens sometimes while researching hardware/tech on forums and ytube site and it's actually good for that simply due to the extra real estate screen space, so gut instincts say if you are doing productivity and for work purposes the 48cx or 55cx may help out you more.
3 metres is good, I am roughly 3 metres for watching films and its nice you are not too far away and not too close, so you can enjoy the sharp detail and enjoy blacks, colours and viewing angle much better.
If you can wait for sure its worth it, might get lucky with some better discounts down the road.
I think Curries still has the better stock for 48CX due to their LG promo deal and partnership in the past, they also have an excellent automated booking system over the phone when booking in and sorting out repairs on LG OLEDs as in they don't mess customers around too much, sadly not as good as JLs D&G burn proof insurance, I like peace of mind though but burn in should be almost a myth at this point.
Thanks R3X. Yeah, I think I'll do the same and get it from JL when they have some stock.
1. The CX is too new for people to have much experience with burn in. It takes a couple years before burn in starts to show up. This model has a lot of anti burn in tricks, and hopefully it's improved enough over prior models that we will have less problems. But we won't know for sure until a couple years at least. I recommend waiting for John Lewis to go in stock and get the 5 year protect plus, which covers burn in, if you're going to use it for productivity work.
2. Yes, take precautions against burn in. Use dark mode in your browser, auto hide your task bar and use transparent mods to make it invisible. Changing contrast doesn't do anything to help, however reducing luminence (OLED brightness setting) will. For SDR content it is far too bright anyways out of the box - I set it anywhere from 20-30 without an issue. Apart from those things you should be good. Brightness of 28 is 100 cd/m, 36 is 120 I believe, so plenty bright in my opinion.
3. Text sharpness is 92 PPI for 48". If you want to use it as a PC monitor do not go bigger than 48, because a PPI below 90 is pretty horrible (if you ever used a 27" 1080p monitors you know what it is like). 1440p 27" will have higher PPI and so text will look sharper (and smaller) in comparison. The 48CX is basically the same as a 24" 1080p in terms of fonts. I think that it is fine, although I would like it if the screen was a bit smaller (e.g. 42") with higher PPI.
4. The main con I think for productivity usage is the glossy screen. It's nowhere as bad as the old Apple cinema displays, but if your room is very bright it will be annoying I think. You can crank up the brigthness to combat it.
5. It's very important you get 4:4:4 chroma so fonts look good. That means on a 2080 you will have to run at 60Hz. Only nvidia 3000 series supports 4:4:4 at 120hz using HDMI 2.1.
6,. Your 2080 will work at 120hz in games but the chroma reduction will cause color issues. What people do successfully is just run at a lower res like 1440p so you get full chroma. The LG has excellent scaling so it should look good still. Then save up for a 3000 series.
I'll reiterate that getting a 55" for productivity/PC monitor use would be a huge mistake in my opinion. Only get that size if you're just going to be gaming or watching content on it. The PPI is just too low. The 48" is perfect for it since the PPI means you can sit about 60-80cm and it's perfectly usable. It's like having 3 30" monitors in portrait mode next to each other.
I think the LG is amazing and you won't regret it.
Thanks nvars, I'll comment on your points in order:
1. That's a good point about the CX being too new to tell about an real and widespread burn in issues - I'll definitely buy it from JL and pay the extra for the insurance.
2. Thanks for letting me know about your settings around brightness.
3. On the text sharpness front, for the last 8 months while working from home (aside from a month or so between 2 G9's that I returned due to issues), I've sadly been making do with a 32" 1080p screen (~68 PPI), so I definitely hear you on the PPI front. If I went for the 55" then I'd put it on the wall so, given some room for mounting, it would be around 1.1m away from me (35cm further away than my 32" screen sits from me), so the effective PPI would be a significant step up vs the 32". If I got the 48" then I'd put it as far back on the desk as the stand will allow (so it will be about 85cm away from my eyes - 10cm further back than the 32"). My reasoning for not putting the 48" on the wall is that I think the text would get too small if I put it on the wall, either that or I'd need to increase zoom and lose real estate. Alright, so I just ran some calculations and the maths reveals something surprising; the effective PPI of the 55" on the wall at 1.1m away is better than the 48" on the desk at 85cm away. Based on that, I think whether or not I go for the 55" or 48" may come down to cost - although I am concerned about where I'd put my speakers if I get the 55" (I don't want to raise the 55" up since that my cause neck strain - meh, I'd figure it out).
4. My room is a touch bright first thing in the morning, but not so bad after that, so the glossy screen is a little concerning. As you say though, I could raise the brightness when I need to and if I do get screen burn (which hopefully I don't, since I'd want to be careful with it), I can make use the the insurance if it becomes an issue.
5&6. I hate chroma subsampling so I'd definitely make sure I run 4:4:4 at all times. Just as you suggest, for productivity I'd run 4k@60Hz, but for games, I'd planned to run it at 1440p@120Hz on my 2080 anyway. At some point around the beginning of next year, I'll look at either getting a 3080 or 6800XT (since I could swap out my 3950X for a 5950X and get an added performance boost with the 6800XT, whether I'll bother swapping out the 3950X remains to be seen though).
