PDA

View Full Version : the butterfly effect ---visual effects


onix3dmx
01-24-2005, 02:07 AM
I just saw this movie and really like it, .......I was really impressed with the part that shows Ashton without arms,...........HOW DID THE DO IT!!:eek:

does anybody know?

:rolleyes:

Aruna
01-24-2005, 08:00 PM
A good friend of mine worked on this show, and actually DID that shot. :) I'm assuming you're talking about the shot where the camera pulls back and reveeals Ashton without arms.. From what I remember, it was hell to complete. The camera was moving backwards, no clean plates (that I recall), and it took a long time. There were 3D renders of his stumps which were matchmoved to his arms, and then she painted out his original arms with the background bedsheets. This was done while she and I were at Toybox, and she was working on that show, while I was working on a different show. If you have any other questions, I'll see if I can get them out of her. :)

Aruna
01-24-2005, 09:44 PM
She was having difficulty registering here, so here's how she did it..

The shot was done on Discreet Inferno.
The context of the shot was a long slow camera move that began with
a close-up on the character sleeping. As he awakens, the camera
begins the pull-back to reveal that with the latest revision of his
life, he is a double amputee from the elbows down. The camera move
ends with a wide view of him in bed with no arms and a full view of
his room.
In the original footage, there were tracking marks applied to the
walls for the cg artists to be able to track to. Ashton was given
green screen gloves that ended where his cg "stumps" would be
applied. At the edges of the green screen gloves, were black and
white checker board tape, which would also act as track markers.
There were also track marks applied to Ashtons body to assist with
tracking the rest of his body movement.
I was actually the second or third compositor onto the shot, and
really what remained for me to do, was cleaning up the track marks
on the walls and his body. Another comper had already taken care
of the green screen arm removals and the insertion of the cg
stumps.
The big challenge in this shot, for me, was that in the original
footage, Ashton has his green screen arms under his head/by his
head on a pillow. As he moves, his real arms make wrinkles in the
pillow case which should actually not be there because when the
shot is completed, he will not have any arms. This was also true
for other parts of the shot where his arms/hands cross in front of
moving materials, shadows or rest on the covers of his bed, making
more wrinkles.
While we did have clean plates, these were not done with the same
camera move as the take finally used for the production. So, on my
part, there was a lot of tracking, paint work and color correction.
Hope this gives you some insight into the "making of".

Cheers!

If you have any other questions, I'm sure she'll be online sometime after registering to answer any more!

onix3dmx
01-25-2005, 02:41 PM
wooow! Thanks a million!

now I can tell my friends that the guys actually did it explained me!

well kind a...jeje


:thumbsup: :bounce:

CGTalk Moderation
01-25-2006, 03:00 PM
This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.