Videomaker – Learn video production and editing, camera reviews › Forums › General › Video and Film Discussion › Having trouble with green screen setup and halo/glow › Okay, a few adjustments that
Okay, a few adjustments that no one else has recommended: first, remove the couch at the back of the room, which will allow you to move back a bit so your talent can move forward a bit, hopefully not so much that you need to frame things out.
Then, keeping very tight control of your lighting can help. With the light carpet, walls, and ceiling, there is bound to be extra bounce. Cutting that down may help.
Next, flag off your green screen lighting. The way it sits in the pic, there is spill from those lights falling on your subject. Do your best to minimize that. Additionally, yes, you need to light the screen as evenly as you can, but using dimmers on those lights can reduce the bounce somewhat. Through trial and error, you can find the best balance.
At the same time, isolate the light on your subject as much as you can. Because of the short throw, cheating your key light a bit higher than the recommended 45degrees, then flagging that light so that it doesn’t land on the screen can help. Run those lights as hot as you can get away with. The main concern is to keep shadows on the screen out of your frame.
Focus your hair light carefully, and run it as hot as you can (even as you run your green screen lights as cool as you can).
If your talent is blond haired, that can add to your challenge.
Finally, depending what your software package is, carefully apply the “thin edge” setting on your key effect to reduce the green rim. As mentioned previously, pulling multiple keys can help, because when using a portable set-up like you have there are inevitably “hot” and “cold” spots. I’ve found that starting with the darkest spot I can find then increasing the color tolerance until two-thirds to three-fourths of the screen disappears, then applying a second screen to the darkest part of what’s left and adjusting that color tolerance as far as I can, followed by using the “edge thin” adjustment I can usually get it done. If I absolutely must, I’ll also feather the edge just a touch to blend out the last little bit of green.
An additional observation is that your green screen appears to be a fairly dark green. That might be limiting your key because it’s closer to the darker blues and greens that are involved in the clothing and shadows of your subject. A slightly brighter screen might provide more contrast and make the whole process easier.
One more comment is that I have used my set-up quite a bit. Even though I carry a heavy-duty steamer, I frequently have wrinkles in my screen. Because my screen is large (10’X20′), it is often not real evenly lit. Sometimes, due to space issues and ceiling heights, sometimes shadows are unavoidable. By making sure that the area behind and surrounding my subject are well lit, I’m usually able to key out everything I need. Having said that, I’ve gotten good at cropping and using inverted opacity masks to remove problem areas altogether. 😉
Good luck with the new studio.