I'm about to start to shoot a production in a studio, where we will have a broad object of about 5m(16ft) length and 2m(6ft) height.
Now I am trying to figure out, how wide the greenscreen in the back needs to be.
I think it might go like this:
It all depends on 3 things:
- My focal length
- Distance between camera and object
- Distance between object and green screen
My focal length will be 50mm. On a super35 sensor, that gives me a FOV of about 24 degrees.
First question now is:
If I need the object to be frame filling from left to right, how far does the camera have to be positioned from the object (with a 50mm lens)?
If the distance between the object and the green screen is about 4m (that should be a good distance to avoid spill, right?), how wide does the green screen need to be, when I'm on a 50mm lens?
Thanks a lot!