>>8217
>While the TOS remaster wasn't completely horrible, I tend to favor remasters that falls more towards conservation and preservation, or very minimum cleanup restorations. Not adding new stuff in.
While the versions in syndication are the "upgraded SFX" variants, there are also HD versions of the "orginal SFX" included on the blu-ray sets. However, the "original SFX" look pretty damn gritty, that's because most of the effect shots were heavily duplicated and reused, so they suffered from heavy scratching, multi-generational copy degradation, and compositing multiple element layers to form a shot (planet and ship on separate frames glued in).
The TOS restoration was also a very early effort in the industry and as such, a bit of learning experience. The details in the resources I looked are a bit sparse, but sounds like they restored the episodes from the edited negatives, which incorporated the heavily duplicated SFX shots. Some years later, I think they did uncover the original SFX elements as part of the Roddenberry Vault materials, and as such, they could probably restore the original SFX to maximum detail level to match the quality of the rest of the negatives of the live action sequences in the episode negatives.
Some comparison videos of "upgraded" and "original" SFX blu-ray versions:
https://www.youtube.com/watch?v=kfSVJSMPkkE
https://www.youtube.com/watch?v=4Qzzkw-FSwc
Other articles about the restoration process:
https://trekmovie.com/2016/09/06/retrospective-the-original-series-remastered-project/
https://trekmovie.com/2016/09/01/the-roddenberry-vault-blu-ray-details/
http://www.startrek.com/article/the-lost-film-of-tos
https://trekmovie.com/2006/11/20/behind-the-scenes-at-cbs-digital/