shooting green screen from inside a vehicle
Posted 23 November 2006 - 04:51 PM
I'm a film student at UBC and am doing a short which includes several surreal scenes using green screens and a bus. So far those i have talked have rommended placing the screen atleast ten feet away and lighting it equally. However, I am worried about window reflections and spill that might end up on our actor inside the bus. Also we will be shooting with dv.
any suggestions or advice?
Posted 23 November 2006 - 06:11 PM
If you are going to shoot "DV" shoot the highest quality of dv possible, like on a dvx (minimum) and an HVX 200 would be prime.
Posted 23 November 2006 - 07:11 PM
Posted 24 November 2006 - 12:19 AM
it was suggested to me the other day that adding a wiff of magenta to the back light would 'help' to cancel out any green spill on the action. might be a no brainer but it made me go 'oh yeah!'
Posted 24 November 2006 - 01:07 AM
Posted 24 November 2006 - 03:40 AM
Just for your green screen shots, if you can get your images recorded onto something else it would give you an advantage. For example the panasonic P2 cards or a teathered digi beta recorder will record 4:2:2, so you will get double the colour info.
Other than that, make your green screen as flat and evenly lit as possible. A computer doesn't "know" the difference between variations in the green screen that you want to key out (shadows, folds, light fall off) and the ones you want to keep (reflections on the glass, foreground motion blur). The more even the green, the better your key.
Baraka Post Production