How was it zooming in and out using the zoom ring?
You mean zooming manually? It responds very well.
Basically, there's two modes, you either use the W-T area, or you use the focal lengths.
When you're in the W-T area, the default position is the middle, like in this photograph. There's a spring mechanism that sets it back to the middle. You can go left to the W, or right to the T, the ring doesn't turn past those letters (hard stops). You can adjust how fast you zoom with your movement, by rotating more or less. Maximum speed was decent, not crazy fast, but I think it can be further adjusted on RV cameras (I didn't bother trying the R6V, I was using my original R6).
The switch PZ/MZ on the side of the lens (seen on many other pictures) lets you go the other zone of the ring, on the right. You hold the switch, rotate to the focal lengths, and then release it.
The manual zoom is operated electrically with two nano USM motors, so it responds every well, in general use there's no lag at all; you can provoke lag if you turn the ring like a jerk, on purpose, however it's minor.
There's hard stops at 20 and 50, but there's no resistance at all, the ring turns as easily as the lightest electronic focus ring you can imagine.
