3rd party lens for video that focus correctly

I've been looking at e-mount lens from Tamron and Sigma for video use I have read reports that these lens focus ok for stills photography but not for video.
Does anyone use Tamson /Sigma lens for video that work well with the AF or should I stick to native Sony glass?
Problem is the 24-70 2.8 G master is so expensive compared to the Tamron 28-75 2.8
Thanks
Dave

I see there is a SOny E-mount video lens which doesn't appear in the database.
SOny 18-105mm PZ
Appears to be APS-C on E.
Never seen one in the metal but currently on sale s/h on CEx at £330.

It seems the Tamron 28-75/2.8 had some problems that are fixed with firmware 2.

Dustin Abbot mentioned in his review:
"Unfortunately for Tamron, a few early reviewers discovered a minor focus quirk in video AF mode under a very specific set of circumstances, and, in typical YouTube fashion, I began to hear from everyone about the “broken autofocus” on the lens. I found this somewhat ridiculous, as I actually had a copy of the lens myself and was just nailing shot after shot. I had already filmed a whole 20+ minute episode (my Sony a73 review) with the lens, and the AF tracked my face literally perfectly the whole review. I’ve used the lens a fair bit on a gimbal as well for some video work, and had no issue that I could point to. I was unable to recreate this “major issue” no matter how I tried. I’m not doubting that at least someone encountered it (as Tamron immediately began working on a firmware fix), but I doubt it was ever a serious issue."

Also, in this thread on DVXuser there are some happy video users. I think it will be fine. But when in doubt, the 24-105 is a good alternative (unless you need f/2.8, but adds 30mm on the long end)