They got rid of the shallow depth of field effect so that the tree isn’t blurry as it’s popping out of the screen right into your face.
Retroactively converting movies to 3D is one of the dumbest things.
Yes, and they haven’t done a good job either. I watched the 3D in cinema, not every scene was done properly. I’m a fan of 3D but if done properly. No point in doing it for a traditional animation really.