It turned out Arthur was a retired cinematographer who just wanted a quiet job to stay busy. He’d been using the office’s high-end gear at night to document the "co-work" culture he saw every evening.
: Using a small hex key, she loosened the back-focus ring on the camera body. www bf video co work
: The act of multiple specialists (editors, cinematographers, and directors) working together on a single project. It turned out Arthur was a retired cinematographer
The phrase "www bf video co work" does not appear to be a standard website, established company, or widely recognized industry term or widely recognized industry term