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	Alterna GV-25

	Alterna GV-4

Light and easy to handle, sets up in minutes

Converts to low mode for crane opp's

Optical alignment is fast and easy

Three knobs provide all the pitch, roll & elevation changes needed

+ - 5 degrees of convergence

depending on high or low mode

Hand or motor operated IO

and convergence

Elevation, pitch & roll adjustments

all on the IO sled for convenience

Large stable feet facilitate setting the

rig down on any surface between moves

Reversable scales for high and low mode in both SAE and metric units

Carbon shroud removable for inspection, cleaning and replacment of mirror

MagiCine announces their new Alterna line of Beamsplitters for live action stereoscopic production.

MagiCine’s Alterna GV-4 beamsplitter rig provides an inter-axial translation from zero to four inches and a maximum available convergence of five degrees. This range is ideal for capturing stereo images under 15 feet. The GV-4 represents the accumulation of four generations of designs that have been used in feature production. Its simple and unique camera alignment system assures the most accurate stereo images for minimal post rework. Its simplicity and ruggedness of design allows quick setup and movement between shots saving the production money. The I.O. and convergence can easily be manipulated by hand or driven by industry standard drive motors depending on budget or creative needs. The GV-4 is camera agnostic, this gives producers more options for their budget. Speaking of budget, producers liked the minimum crew needed to rig, align and move the GV-4 system as pictured below on a promotional test shoot recently.

In the pictures below, the GV-4 on the left is fully rigged with REDS ONE's, released and moved in 30 seconds, another system on the right took, well you be the judge.

Advantages of the Alterna GV-4 design

QUICK RIGGING, ALIGHNMENT AND MOVING.
Perfectly suited for the RED ONE, EPIC, & ALEXA CAMERAS.
Agnostic camera platform. Any camera with the ability to synchronize frame captures can be mounted with a max height between base and lens of 4.25”. (Special camera plates available for specific camera installations)
Simple and lightweight yet rugged design is ideal for rental houses and production companies alike. Fast setup and adjustment saves money.
0” to 4” of Innerocular travel. 5 degrees total convergence available.
High mode (left eye on top) is the standard configuration.
Low mode configurable (right eye on bottom) Crane opp's etc.
Mirror box is removable and can rotate 180 degrees for low mode.
Removable carbon fiber mirror shroud for quick access to mirror and lens for cleaning / inspection.
Open frame design allows for easier access to lens drive-gearing setup.
I.O. and convergence can be driven by standard motion controllers and motors. IE: C-Motion, Preston etc.
I.O. and convergence can be manipulated easily by hand.
Complete optical axis alignment capabilities, elevation, pitch and roll can be adjusted independently.
Proprietary mirror design provides for the highest balance of color and dynamic range possible for each camera.
Aircraft alloy construction with 2 step colorfast black anodize and stainless steel fasteners.
31 pounds without drive motors.
Large rubber feet and handles for ease of resting and movement between set-ups.
A Pelican 1660 case is provided with firm foam padding houses the complete GV-4.
Adjustable top and side matte box flags available, they are reversible for Low Mode.
Serviceable components.
1 year warranty.