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REFLEX MOTION CONTROL 2008©

TECH SPEC ON MOTOMAN 7 RIG


The Motoman is a rugged & reliable industrial robot specifically adapted to provide motion control on video, 16 and 35 mm film cameras. The rig has 7 axes of freedom including tracking and operates on industry standard Giraffe tracks. Track lengths of up to 10m are achieved. The rig can jib camera from below track level to almost 3m high and achieve almost any camera orientation within that envelope. Pan/tilt/roll of 300° can be achieved.

Special Features & Programming
The computer provides accurate referencing of the lens' nodal point allowing full nodal pan/tilt/roll.

Moves are programmed as a series of points (key frames) and moves between these points can be programmed as linear, circular/arc or spline moves. Acceleration/deceleration can be set to ease in/out of the move. Move time can be accurately set for each move, and move time can be scaled. Moves can be divided for stop-frame animation (up to 1500 frames in 1 move).

Points are programmed from a pendant set-up to jib, track camera left/right or in/out along the lens axis, pan, tilt and roll. The operator can therefore quickly move the camera to the director's instructions. Programming is relatively quick, and simple moves can be executed within a few minutes.

A further feature is target tracking where the camera can be programmed to maintain a fixed point in frame, e.g. a logo, while the move is executed. This feature is also used for scaling where objects of different size can be matched (for example the rim of a goldfish bowl and a camera lens). Moves can be executed and repeated with time/distance scaled.

For integration of live action shots with graphics, data can be transferred to allow the graphics editor to match camera moves. An important feature of the Motoman is that objects in the scene, e.g. a table top, can be referenced into a user-co-ordinate system giving 3D data on that surface and the camera's relative orientation to the surface. This allows the surface to be created in graphics allowing graphics objects to interface seamlessly with live action shots.

Focus - The rig is a stable platform, even during moves, which allows focus to be pulled in the normal way or via remote.

Digital inputs/outputs can be used to sync external events. Analogue inputs/outputs are also available. All these can be programmed into the moves for accurate repeatability.

Portability
The rig can be moved from studio to location with relative ease in our custom-built trailer. Set-up time in studio is only 1 hour. Moves executed on location can be stored and repeated at other locations or in studio.


TECH SPEC ON MILO - full tech spec

Developed by Mark Roberts Motion Control, Milo is for those who require the quality that studio systems can offer in a portable system. Milo is the first portable system that is rigid and fast enough for live action shooting. Yet it can be ready to shoot within 35 minutes of arrival on the set.

Axes
Milo provides axes for Track, Rotate, Lift, Arm Extension, Head Angle, Pan, Tilt, Roll, Camera, Zoom, Focus, Fade/Dissolve or Iris, while the overall system can control many more axes for model movers and the like.

CGI Interface
Using our specially developed CGI interface it is now possible to plan your moves in CGI (such as Softimage or Alias/Wavefront) and have them executed directly by the Milo. Alternatively any moves already created by the Milo can be passed directly to a CGI platform simply and without fuss. This rapidly speeds the process of combining live action with CGI.

Optimised System Geometry
Although the arm of the Milo swings in an arc about the centre of the rig, straight line moves are achievable vertically, horizontally or in any direction, through the use of the "Target Tracking" feature in the computer software. For example, during a vertical straight line move, the track automatically compensates as the arm swings up to produce a perfectly straight lift.

The Milo's geometry allows it to perform moves from ground level (or 0.5 meter below) to a maximum height of 4.1 meters (13.5 ft.) with a minimum of image shake. The extending arm enables the system to be shortened for delicate close ups or lengthened for greater reach.

Note that the Milo Long Arm now gives a lens height of over 6 metres

Track
Where portability is an issue we use standard 1 meter wide dolly/crane track. However, should you also wish to provide a superior foundation for studio use or very high precision shooting, we provide our own linear v-block bearing rail which gives even greater stability.

Information and imagery on Milo rig system is supplied compliments of Mark Roberts Motion Control...