C-Pan Arm and Mini C-Pan Arm Product Description
The C-pan arm is a very unique camera guide contraption that mechanically can move a camera in a variety of different paths; straight pan, outward curve, inward curve, horizontally, vertically or at a sloped angle or even forward or backward moves.
The camera is always set to move with whatever move the arm makes. (i.e if the arm moves in an outward shaped curve, then the camera will stay directed towards the centre of the curve and if the arms are set for a smaller radius curve, then the camera adjusts accordingly to stay pointed at the centre.) Through positioning its arms at different angles to each other, the C-pan arm can be set to move in a virtually infinite number of curves.
When making a straight pan, the arm functions as a traditional straight-track dolly slider, but without the tracks, where it can pan in a range of 3 1/2 times its folded length.
I'm not sure how many people work with Open Frames (a.k.a Scrim Jim Frames, Cine Frames, 4x4 Frames, etc.), but it's a handy bit of kit when you need to setup diffusion, a bounce, flag a light, or to hold a gel away from hot light(s). There's a million creative things you can do with these open frames, but many portable kits are going to run you hundreds of dollars.
Now obviously you're reading this because you don't want to spend a ton of money. So here's a simple idea you can use to build some simple frames (without tools) and can be found at your local hardware store. Just look for the aisle that carries Aluminum Window Screen or Aluminum Door Screen Kits.
You can get them in practically any size and some very large sizes. The channels are aluminum which can easily be cut down for custom sizes with a basic hacksaw. These kits are perfect as they use special 'corner adapters' that are designed to fit tightly into specially formed aluminum channels.
These ready made custom corner adapters make them ideal for use as a kit with quick assembly and disassembly of an open frame. I believe you can find 4x4 kits for under $15 bucks and not only do they work great, but they are super lightweight, and I think they look a bit more professional than pvc or wood. The flat tubing makes them easy to clamp to with little binder clips, C47s, etc.