Attached Link: Bob Sabiston interview at Planit 3D

. You might find this interesting, we did an interview with Bob Sabiston, head of animation for 'A Scanner Darkly'. Yes, he did use software he's developed over many years 'Rotoshop' but that helps with 'tweening not with the tracing. His answer was the same as yours, "takes me hours to do this by hand" :biggrin:

regards
prixat