I just cam across this really high quality cinematography rig called the Vocas Handheld Kit for Sony a7 Series Cameras

Now it's by no means cheap @ $2158 US @ BHPhoto (Click Here)

Comfortably shoulder-mount your Sony a7 series camera with the Handheld Kit from Vocas. Included in the kit are a 15mm LWS (Lightweight Standard) baseplate, a shoulder mount, an offset bracket for the shoulder mount, a top handle with a leather grip, a pair of leather handgrips, and a 2 lb weight attachment plate with a 2 lb counterweight.The Vocas Handheld Kit is built so you can keep your camera shoulder-mounted for long periods of time. The handles feature leather accents for a comfortable grip. The shoulder pad is rubberized and has a counterweight to move the rig's mass off of your hands and onto your shoulder. The offset bracket places the camera in line with your field of view so you can monitor your video and change camera settings without external viewfinders or controllers.
All the metal components in the Vocas Handheld Kit are assembled from aluminum to provide you with a stable yet lightweight shoulder rig. The handheld kit complies with the 15mm LWS so it is compatible with many rod-mounted accessories like follow focuses and matte boxes.
More info @ Vocas Website this way >>