Film and TV is huge and accessed by hundreds of millions, continuously growing as platforms such as Netflix has phased in the daily lives of consumers. An important factor in these medias however is image quality and how it can have an impact in how we see things.
28 Days Later released in 2002 was partially filmed on a Canon XL1 DV camera and unfortunately this was not a future-proof decision. Although it was a sacrifice made in order to film difficult shots where huge film cameras would be impractical, at 576p as opposed to the 5k+ resolutions of traditional cameras, the staggering difference in quality is noticeable when viewed today and is highly criticised in re-releases.
Stranger Things is a new show which has a great sense of taking the past onto your screen. Taking place in 1980, the early stages of technology is evident with it's limitations alike, with children communicating with walky talkies and using walkmans and radios extensively. In order to further capture this era, the image is softened to give it this 80s style appearance while still being available in 4k.
A lot of consideration is also put into how viewers will be seeing film and tv, with mobiles rampant and their limited ability in quality of sound and colour depth. As most creators try to give similar experiences no matter how they view it, it's a fight on how you want to sacrifice quality for the accessibility of the mainstream.
Due to the different range of tech available, seeing something on a phone vs on your tv vs on the big screen can have a big impact on your experience but it's never really considered. I personally advocate that certain films can only be watched in the big screen and I highly encourage others to watch certain films in the best format available, small subtleties in colour depth and more importantly sound quality can be easily ignored by most but many don't realise just how much of an effect it has.
At the same time, Ives also has to take into account that many people watch on their smartphones. He said that the Duffer Brothers know this, and that's why their filming technique is composed in a way "where you're gonna get the same impact whether you [watch] on a small or a big screen." Naturally, Ives said he would prefer if viewers enjoyed the show on the largest display possible, but he's fully aware that we're living in the era of mobile devices.