_,,,^..^,,,_ said:
Look at this screenshot comparison between the UH 2D Vs 3D: in particular, Arnold's hair and the tree on the center-right... any explanation?
Definitely a result of the 3D conversion.
Since you have to cut out elements of a 2D frame in an attempt to make them look 3D soft outlines like thin strands of hair and blurred edges will be removed since they're quite difficult to cut out perfectly without spending a lot of time on them.