Arri Cforce RF opinions and reviews? Uses, tip and tricks? arri cforce-mini-rf By Nicholas Mckenzie on 5/28/19, 5:41 AM • 883 views Hello. Just about to start using a Arri Cforce RF and WCU 4 (long story, as Im converting from being a long time Preston user) Want to start using the WCU 4 as my primary tool for lots of reasons ,with Preston for back up. Thoughts on the CForce RF? LDA, LDS and changing lenses? Is it a drag to 'transfer' the lens to the motor each lens change? Does LDS interfere here. Would it be better when using a CForce RF and just turn of the LDS? What if DP etc want to see the LDS on the monitors? Would a UMC 4 be better? I like the CforceRF because Id rather not have a MDR on the camera. Trying to get slimmer and slicker with my camera builds. Thoughts, tip and tricks? Aidan Gray On 5/29/19, 11:31 PM I'm guessing you're talking about using this setup on an Alexa SXT/Amira/RED or something of that nature... Personally, I'm also a pretty big fan of the CForce RF vs the UMC-4 for smaller builds (like REDs). It is a bit of a drag to have to "Transfer" the LDA over instead of just selecting it, but you can also do that at your hand unit instead of having to go into a menu and all that, so its like half a dozen or one, six the other if you get what I'm saying. The only time I see myself preferring a UMC over the RF motor is when its a largely studio show and we're running a Cinetape/UDM - you can avoid the LCUB-1 and just use the serial cable if you have the right module, which is nice. Its also a little more freeing as you can top-mount all the cforce motors instead of having to worry about the orientation of the RF antenna. On an Alexa Mini, I would just run through the LDS port on the camera and use the integrated radio (unless you're experiencing range issues or something weird). LDS shouldn't interfere with either the Cforce RF or UMC systems, but I've had issues in the past using Cooke /i lenses and we had to tape over the contacts on the lens - that was ARRI's suggestion :D I think they've since fixed all that, though... Nicholas Mckenzie On 5/29/19, 11:52 PM Great tips. Thanks! One thing I can see is it’s gonna be hard to avoid getting a UMC. (Which really was the basis of my question) Best to have one in my kit and not need it, than to need it and not have one. Aiming to be able to have slick and small builds on any camera I might be asked to use, although I see my life being all Mini LF for a while. ! cheers Fabio On 6/5/19, 7:18 AM Totally agree with Aidan, just wanted to chime in about the orientation of the antenna. I’m on a tv show with the ARRI RF mounted on a Red Helium. We are the B cam and we are on steadicam pretty all the time. The stedicam op asked me for balancing reasons to top mount the motor, so the antenna is always facing down (and turns up only when we go low mode). So far I’ve never had any connectivity issues, but I have to say that I’m usually close to the camera, the more far I’ve been can be 30 feet. Maybe for setups such as car mounts, cranes and so on where you have to be really far from the camera the orientation of the antenna does make a difference.