One of the reasons I don't use my Ursa Mini 4K very much is due to the PL mount. PL lenses are stupidly expensive. But I do know the UM4K has a B4 mount adapter available, and B4 lenses are cheap. There are some Canon and Fujinon zooms out there in good shape. Are those cinematic at all? Soft or sharp?
They might be what I need for some green screen work, if sharp enough. At the moment I only have a Helios 58mm and an Angenieux 25-250 in PL. The Angenieux is a moose. Some of those B4 zooms might be more manageable.
What I wish I had was a 35mm prime, but I don't see any B4 primes.