Was Stargate remastered under the supervision of the director?
Sometimes even the directors don't know any better and ask for dvnr on their films.
A lot of these earlier HD scans made years ago are only know being found at once released on blu ray at full resolution that the degraining caused lack of fine detail that DVD quality would mask or could not show.
So the studios either need to do a new scan of the negatives, prints or ip or just dump the master they already have on blu ray.
If you cannot get a fucked up dvnr'ed release on blu ray for cheap, don't even bother. Sometimes they look marginally better than the dvd or a lot better but not film like. The only reason to buy the star trek set for instance is you can get it for so cheap. The only real restoration in that set is 2, the rest are all previous HD masters. Me peronally i don't want to give Paramount my money for a set they obviously rushed out in time for JJ's action spectacle.
I hope when Lawrence of Arabia comes to Blu RAY the transfer is supervised by Robert Harris who did the original restoration, because i know just what these studios like to do with over zealous use of digital noise reduction.
These computer programs,like the one Lowry's employees wrote the code for are algorithms that do an automated process that sometimes or a lot of the time can' t tell video noise and dupe grain from film grain that is supposed to be there.
You see dupe grain on older films was printed in with each generation of the processed opticals or printed in at the stage when release prints were struck. Hair dirt and grime were also printed in when labs were not exactly as clean and careful as they were supposed to be.
The more popular a film the worse its original elements will be. Star Wars o-neg and ips were used so many times to stike re-release prints and the film stock used on the opticals and live action phototography was so unstable as to almost make the film a lost cause.
At least older films have the advantage of being on film to make them future proof and blu ready.
Later films that were made with non HD resolution cgi need the effects to be either mathmatically upscaled or re rendered. Some films use so many effects this redoing of the effects would not be cost efficient, or would almost be like remaking the whole film except for the live action photography.
TV series where the effects were done on standard def video or the final edit and conform was done on standard def video are a problem when making them ready for blu ray. Nevermind shows shot on video before the age of HD or independants.
Star Trek the next generation the tv show intance was shot on 4:3 35mm PANAVision but the effects and final broadcast edits were done on standard definition video which would have been up to the broadcast standards of the time. For a show like that to be on Blu RAY not only do the effects need to be redone but the show has to be re-edited from scratch using the broadcast master tapes as a guide when recutting the 35mm live action footage. The original series had the fortune of to have been both shot and edited on 35mm motion picture technicolor film as well as the special effects, even so they redid the effects in cgi.