Canon XF105 White Paper page 9

SELECTING YOUR GEAR
Side by Side Rig vs Beam-Splitter Rig
Interaxial separation is an important factor when
shooting S3D so therefore the width of your two
cameras will determine the minimum interaxial
separation in a side by side rig. The XF105 is 121mm
(4.8") wide so therefore 121mm is also the minimum
interaxial distance when two of them are mounted in a
simple side by side rig. The XF305 is even wider at
153mm (6".) Both of these interaxial distances are far too
wide for any application other than hyper-stereo shots
of landscapes, mountain ranges, helicopter shots, etc.
Beamsplitter rigs allow for great variation in interaxial distance
XF300/305 Whitepaper
Tim Dashwood
In order to shoot subjects in close range (within 15 or 20 feet)
you will require a beamsplitter rig.
Beam-splitters use a 50/50 or 60/40 mirror (similar to
teleprompter glass) that allows one camera to shoot through the
glass and then other to shoot the re ection. The interaxial can
be brought down to as little as 0mm (2D) with beamsplitter rigs.
There are over 20 different beamsplitter rigs on the market
ranging from $2500 USD to $500,000. However, many other
types of disparity can be introduced when shooting through the
glass (polarization effect, dust contamination, color cast, etc.)
Side by Side Rig
Stereoscopic 3D
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