Redrock's wireless follow focus has been out for a while now and a friend who just purchased one lent his to me so I could try it on a job. I'm going to try to be neutral about it, but the short answer is that I'm honestly surprised this system made it to market. A lot of this was told to me my my focus puller, but I did have some hands on experience with the unit.
This was a concert and I was using an LDK 8000 with a wireless back on it (this will be important later).
Setting up the unit physically was pretty simple. The motor is small and mounted securely. The receiver unit is also quite compact, a little smaller than a deck of playing cards and with a handy 1/4"-20 mounting hole on the back. The included cables felt durable and were a decently high gauge and I didn't have many problems mounting the unit on either an arm, or later the 15mm rods.
Calibrating the unit was pretty simple both manually and automatically and was reasonably repeatable. Marks didn't line up exactly, more than I can simple pass off to backlash, but not enough for it to cause an issue. the only annoyance I had with calibrating it was that every time the unit looses power, you have to recalibrate it. I ended up throwing a dionic 90 on the back of the camera and powering the FF off the D-Tap so that I could power down the camera when I wasn't using it.
Now to the important parts. While the system moved the lens when the handwheel was turned, it did so in huge steps, and very violently too. I could feel the stepping of the motor down into the first section of my arm. it wasn't noticeable on camera, but it was incredibly distracting. I've been told there's a way to change this in the settings, but after fiddling with the angry blinking lights of the unit and reading the manual, we couldn't fix this.
The unit feels nicely machined, but the transmitter is really bulky and uncomfortable. It seems little thought was put into ergonomics and a lot of though was put into it looking cool. The Lemo connector on the motor was also loose. This was the third time it had been used. I don't think the internals will hold up very well if this is any sign of the actually build quality.
Range. Oh boy. I'm going to try the unit again straight line of sight because there was a wireless nightmare at the venue. 30 channels of wireless mic, a wireless camera, a Bolt Pro, and about 7 channels of wireless intercom. My focus puller couldn't get more than about 10 feet from me otherwise the unit stopped responding entirely. When it did regain connection, it does a weird jerky dance, turning about 3 degrees. Enough to be felt in the rig and enough for it to be noticed by the director.
Edit: Bolt is on 5.8Ghz, not 2.4Ghz. My mistake.
I brought a Bartech the second day and it had 0 issues.
RedRock seems to be great at "80% of the performance for 50% of the cost" but considering it costs as much as a used Bartech M-One set up, it really shouldn't exist.
Edited by David M. Aronson, 13 August 2014 - 01:05 AM.