Complex shadow from live action onto 3D logo
I need to work out how to best shoot and composite this brief…
I have a person walking to camera. That person starts in full view (including feet) she is walking next to a big 3D logo of the company.
So the shoot will obviously be green screen and the the logo is a nice 3D generated logo comped in (Size of Company name would look like it comes up to her shoulders, so say fence height.)
Thats all fine a good…
They want to see shadow from her fall onto the logo.
So (at least at the beginning of shot) her shadow will fall along the ground and part way up the logo next her as she walks beside it.
The tools at my immediate disposal are
After Effects CS 4
But I’m thinking with this shadow, we are moving into full 3D application. Am I right?
Also how do I go about generating that shadow. Do I need to shoot her from a key light perspective, create matt from that and comp it on?
I’m just not sure how to recreate a realistic shadow fall beside her and onto the logo.
Thanks in advance.