Cameras are getting bigger better faster stronger but still 25fps is a requested setting for a lot of green screen studio shoots. Several things that will help your post production of your green screen shoot include shooting at a higher frame rate, increasing your shutter speed, shooting at 4K even when outputting at 1080p. The extra data helps your keying software interpret what should be removed and what should stay. The increased shutter speed helps reduce motion blur and as a result improve the final key. As increasing your shutter speed reduces the amount of light your sensor sees, being in a studio environment makes it easy to add more lights if necessary.