1) very expensive to do more in betweens
2) 60fps looks uncanny to viewers. we’re culturally accustomed to associating 24fps with feature films
2) 60fps looks uncanny to viewers. we’re culturally accustomed to associating 24fps with feature films
That's maybe a bit native, but for an animated movie, I think that the intermediate frames could be computed automatically, for a small additional cost.
I don't dispute that there might be a bit more work (I guess some frames might need to be adjusted manually), but I am not convinced that it is that much expensive to do 60fps rather of 24fps.
And then you have films like Spider-Man Into the Spiderverse where they did a mix of 24fps and 12fps for a more punchy and cartoony effect. In the end it’s not about realism but emotion and artistic representation