Hi,
I just did a movie with the 416. Arri put a lot of thoughts in it to make it steadicam friendly. If you are happy with the clip on matt box (lmb something) you can loose all the wedge and bridge plates and just screw a 416 STEADIPLATE directly to your steadicamplate (cheeseplate, baseplate ???) This 416 STEADIPLATE is an accessory made by Schulz in Munich. It has an Quick release handle so you can easily slide it on and off the body. When took off, you can just slide the camera on the wedge plate (dove tail plate) which is connected to the heads own snap plate by screws. It makes the change from steadicam, to sticks and to hand held set quite fast. You connect your motors either on the 15mm rods connected to the light weight support (which is usually always on the camera, even when using the big Matt box), or use the rosette flange on the right side (looking towards the lense) to connect a tube with a square end. Set up like this, all the stuff can stay on the camera when you change to sticks. Changing is a matter of one minute, even less. I try to post a photo of the plate, if it is not working here is the link to the plate, by Xinetics.
Low mode braket: Arri usually has the specific low mode braket in the package. It is a 2 part bracket, replacing the normal top handle. First part is a common low mode bracket that connects to the top handle mount, where you can screw your cheeseplate on. The second part is another plate with 3 spaecers on the bottom and a handle on the top. You connect it on top of the bracket and the spacers leave enough space for the plate to stay always connected to the Bracket. So while using the camera in every mode but low mode, you can use the top handle to carry the camera, while your cheeseplate stays with the camera all the time, and when changing to low mode, you just take off the top part of the Bracket and voila, you slide on your camera upside dowm on your cheeseplate and the change is done. Matt box and motors are still there, no further changes needed.
It is quit light weight. So if you want more weight on it just use the on board battery. The big advantage of the steadyplate is the reduction of the distance between gimbal and Camera c.g.. so the sled doesn´t have to be that long. The low mode bracket, the light weight support, and the rod with the square end should be in the package, or be at least available in your rentral house.
I don´t know if everything is understandable, i trie to find a photo of the bracket and post it.
Cheers
Fabian
Check this guide on page 16 and 17 with pictures of the bracket, but not the steadicamplate i am talking about. The schulz one is much better and faster to change because it`s tool free.
refering to the descriptions in the manuall. For the best set up( in my opinion) just leave the Accessory Carrier on the camera, loose the wedge plate, keep the Base plate connected to the head, and slide the Schulz Steadicamplate on the Camera
http://www.arricsc.com/pdf/416QuickGuide120407.pdf
link to STEADIPLATE: http://www.xinetix.de/en/gear/%5Bcatpath-raw%5D/416-steadyplate
Schulz: Telephone: 89 72459700
Fax: 89 72459701
Mobile: 171 5328000
International Dialling Code: +49
P.S: I am not working for Schulz, it is just a great product...