BreakfastMan said:
Strange, I feel the opposite. In nearly all movies with practical effects, pretty much all of them look completely fake to me. Modern CGI looks more real than almost anything I see in older films, especially the creatures.
It's more than just the object itself. When there's a physical effect there's something actually there for actors to react to. Whenever a creature or something is completely CGI you often end up with wonky acting. Like look at the bugs in
Starship Troopers. For the year that came out those are some really damn good computer effects... but you end up with battle scenes where, despite everyone firing at a single target, no one's really aiming their rifles at the same spot.
That and there are some things CGI just doesn't seem to
ever do well, like fire effects and matching the lighting/shadows of a shot. You end up with objects that just don't quite look like they're actually there. An extreme example would be pretty much any of the creature effects from those crappy Asylum movies, but it's still present even in big-budget films. Because
Alien seems to be the big thing right now on the Escapist, it's like trying to compare the Xenomorphs from
Alien and
Aliens which were done entirely with practical effects to the Xenomorphs from
Alien: Resurrection which were largely CGI and look like bad video game graphics (particularly in the underwater scene).
Not to say practical effects are perfect. The Xenomorph in
Alien 3 was a practical effect (a rod puppet) that was later inserted into shots. It looked horrible, and is probably among the worst creature effects in anything within the
Alien universe. It's certainly the one that aged the worst.
For my money, a mix of practical and CGI is the way to go. You have something actually there for your actors to interact with, and you can use the computer effects to enhance the object. And because you're using two different types of effects, the viewer will have a more difficult time figuring out whether it's practical or CGI because the human eye will take longer to pick up on uncanny valley imperfections. Assuming it's done well. A decent example of this is the T-1000 from
Terminator 2: Judgment Day. The T-1000 was a blend of practical and computer effects, with most of it being done with practical effects and CGI used to enhance those effects, and for the most part it still holds up twenty-three years later.