Holoset
Holoset,
now known as Chromatte, is a chromakeying solution from Reflecmedia.
It works by placing a ring of LEDs called a litering
around the camera lens. The LEDs shine blue or green light onto
the Holoset. The Holoset is made up of millions of microscopic glass
beads which are hemispherically coated in aluminum. This makes it
covered in literally millions of tiny dish shaped mirrors. The net
optical result is that any light shined onto the Holoset is only
reflected back at it's source. Because of the unique way that the
Holoset reflects light only back at it's source it can do a number
of things that traditional chroma key techniques cannot. Holoset
can work in almost no light making it idea for virtual sets, because
the color is generated by the LEDs and the Holoset only sends like
back to the camera so you can light your talent for the virtual
set they are in. This also makes it so it has no spill since there
are no bright lights reflecting the very color you are trying to
key off the background and onto the talent's hair and shoulders.
Chroma Key Backdrops
Getting a good even color behind the talent is the first step in
chromakeying, this usually requires a chromakey backdrop in the
form of cloth or paint. Chromakey paint can be picked up at hardware
stores or lighting places like Studio Depot (Burbank, Ca), green
cloth can also be found many places. Some companies sell blue or
green pop up chromakey backdrops which travel easily and popup like
a windshield shade.
Another alternative is Holoset,
a unique retroreflective material which is gray to the eye, requires
little or no light, and casts no spill on the talent because the
material is gray to the naked eye. But to the camera it sees it
as a perfect blue or green. This is because of the Litering,
a ring of LEDs around the lens which casts blue or green light onto
the Holoset. The Holoset is also very portable, an 8x8 foot curtain
collapses into a small bundle and with the need for only a small
lighting kit travel with Holoset is easy.
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