Joe Zekas who runs yochicago.com shoots walk-through video for professional rental management companies. He does not shoot for Realtors.
I stopped working with Realtors about 3 years ago, and turn away requests to do so. Since then I've shot nearly 1,200 apartment walk-through videos. Most of them have been at the luxury end of the market, with rents up to $15,000 a month.
My clients are mostly large, professional management companies that typically hire some of the best photographers in the country for stills for their projects. If they have any concerns about the production quality of my videos, they've never voiced them. What they care about is that a) I reach an audience of renters, and b) the videos make their leasing agents more productive. I shoot photos of the apartments with a Nikon D850 with on-camera flash only while on-site. Clients are free to use the photos however they wish (except for giving them to brokers), no credits required. If a client wants to hire me for photography only, I refer them to a professional photographer.
For the past two years most of my videos, including this one, have been shot with a Panasonic GH5 with the 7-14mm f/4 Panasonic lens and a Zhiyun Crane gimbal. Prior to that, I shot walk-throughs with a GoPro on a Zhiyun gimbal. I've also shot a few video walk-throughs, that clients have been very pleased with, using a Galaxy S7 phone and Osmo Mobile gimbal. Clients have never paid any attention to my gear.