I edited to say "*almost* perfect"

I think it's a comparison thing. Compared to what I had before, which was the shoulder pad on the ET all the way out back and using the camera LCD 3 inches in front of my nose, it's a huge step forward. :-)

This is the most professional and better balanced rig I've seen for the F3, which also mounts RED and other cameras. It's the new "Movietube CR" from Kinomatik, made in germany. They also make similar rigs for DSLRs.

The Movietube CR is essentially a baseplate and shoulder mount with tripod quick release in a single piece, that allows the accomodation of 15" and 19" front rods, even both at the same time if required. On the back there are telescopic rods that allow to balance the batteries and everything else on the rear, to compensate for heavier front rigs.
The system includes a very robust side arm with a top handle which accomodates an EVF, ENG lights, TFT monitors and shotgun mounts, plus it also comes with a video+power distributor, with 12V, 5V, 9V and 7.2V outputs.

The hand grips are optional, you can use theirs or any other you might like better. Those here rotate in the 3 axis.

It's not cheap but it's very well engineered and built.

Have you seen this?

SONY F3 Support - Movcam.com (http://www.movcam.com/en/sony-f3-support/f3-support/f3-support.html)

It doesn't look so bad after all... even though it's made in China.

shoulder_pad_unit-303-0201-001 | Flickr - Photo Sharing! (http://www.flickr.com/photos/movcam/6116069835/in/photostream/)

I have the Kinomatik CR and found the entire top assembly...the handle and especially the VF mounting hardware...to be completely useless and removed it. The CR parts I do like: the riser/shoulder pad that clicks right onto a sony plate, the included dual 15/19 rods and the rear battery slider.

Overall, if I had it to do again, I'd pass on it...or order it without the VF assembly.

Both the Kinomatik and the Movecam look like they bring things up to 30lbs. Yikes, no thanks.

I promise I'm not trying to be a negative grump, but the Movcam in particular apes the Red side cages that most of the first 1000 buyers of the Red bought, and now nobody uses because they made the camera so bulky and heavy, plus the "problems" they solved could be solved in cheaper, lighter ways.

Those Red side cage parts now fetch zilch on the used market, nobody wants them. Cast aluminum boat anchors.