Hi Tom,
Thanks ever so much for the article. The Samsung is on my list for next potential TV so it's really good to hear of ways it could be set up to get the best out of it.
In terms of the missing ambilight, I get migraines and I was finding watching a TV in a totally dark room could triggers migraines. From the (little) reading I did I think it's because my brain doesn't deal with the border between the TV screen's light and the rest of the room being black.
Like you, there are times when it's really nice to have a dark room and especially when friends come round as they can't see anything so I am forced (hopefully not too begrudgingly, although I do feel want to say as one does on a car journey "could not have gone before we started")
So, I got myself a wifi light bulb for the living room - only for the living room - I don't need it anywhere else. It's bloomin' great. Truth be told I really didn't get it for me, I got it for my late puss, having it controllable by wifi meant I didn't have to disturb Charlie's restful slumber.
Best part of the wifi bulb is I got a multi colour one - infinitely better than plain white. The best colour on the bulb is blue - when you watch a film it feels the same as seeing a film in pitch black but you can see everything in the room - so you (or guests) can get up and not bump into stuff. It's got the aded bonus of not feeling like you've broken the 'spell' of the movie.
Just a final note. In terms of migraine and headache suffers - everyone is different and so although the blue light hasn't triggered migraines for me if anyone is a suffer be mindful that blue light could be as bad as watching the set in the dark. Also, there is quite a lot of stuff about the negative effects of blue light, especially blue light in the evening - so my best guess is to use blue light shows for movie not and not too regularly and if you use it a lot and find yourself not being able to sleep properly or waking up feeling tired - it may be over use of the blue light.