I thought you might be interested in this quote from producer Chris Long -
"We are one of the last one-hour dramas in television to shoot film, and we want to hang onto film because we think it looks beautiful. So much of the HD can look good, where it does still struggle in the exteriors. So, therefore, you know, we shoot a lot of exterior. We want to see California. I guess we have a love affair with California, so we are sticking to film cameras. "