I have 3 set-ups in a greenscreen stage:
- 3 girls walk on water (on 3m x 6m pool);
- walk on a wall of skyscraper (on 4m x 10m piece of mirror wall);
- stand on the roof of skyscraper.
All of this must be wide-shots shooting in different angles and movement of a crane.
This shots will be combine with shots of real river, real skyscraper and high angle view of the city.
I need some advice with greenscreen and day effects simulation.
In a stage I have to simulate overcast and sunny day.
What is the best natural and simple way to simulate an overcast day: spacelights or big batterfly frames (or maybe something else)?
1) in the case of spacelights:
a] is there any formula to calculate how many fixtures I have to hang by set area?
b] any formula to calculate an exposure with spacelights?
c] I want to add a little cool quality to a sunny day. Is it real to cover all (or half) spacelights in 1/2 CTB? Is it common way?
2) in the case of butterfly frames:
a] how much area of frames will I have to have (taking into account the set area)?
b] will it be more naturalistic either light through frames (silk, etc...) or light in reflection?
3) I have several reflection surfaces in a set: mirror floor (4m x 10m) and waterpool (3m x 6m) and I have to shoot this set-ups in many angles. Are there any advices about working with such kind of surfaces and greenscreen/lighting approach etc.
4) can I use some lens diffusion with greenscreen?
Thanks for answers!
Edited by Sergey Block, 26 April 2015 - 05:38 AM.