In Broadcast - November 2013 - 58

I N T E R N A T I O N A L

WWW.INBROADCAST.COM | ISSUE 25 - NOVEMBER 2013

N E W S

InGEAR

Ikegami - If 'Good Enough' Won't Do
The Ikegami Unicam-HD Camera combines broadcast technology with superb cinematographic pictures...

he Ikegami HDK-97ARRI, a new
camera in the Unicam series,
represents the latest development
in Ikegami's concept of dockable
cameras.
The camera adaptor docked on
the back of any Unicam-HD camera
head can be easily separated from
the camera by simply loosening
four connecting screws. This
enables the flexible choice and
the quick exchange of different
camera frontends and rear adapters
- depending on the shooting situation.
This allows any of the camera
adaptors - for ﬁbre, triax or wireless
transmission - to be docked with any
of the Unicam-HD camera heads -
there are four different models and
quality grades with 2/3-inch-CCD or
CMOS sensor prism blocks available,
in addition to the new HDK-97ARRI.
The HDK-97ARRI has already
been recognised by the IABM
(International Association of
Broadcasting Manufacturers) for
its ground-breaking design as a
Winner of the IABM 2013 Awards
for Design & Innovation presented
at the IBC Exhibition in Amsterdam
in September.

The HDK-97ARRI
The centrepiece of the camera is
the Super 35mm CMOS sensor
of the ARRI Alexa Digital Cinema
camera, with ARRI's De-Bayering
electronics. 16-Bit signals from the
ARRI frontend are transferred to
Ikegami's digital signal processing.
All camera processes and
functions are carried out in real-time.
As any Broadcast System Camera
requires, all relevant parameters
can be adjusted and stored without
delay. In addition, new functions
like variable colour temperature,
continuously variable master gain,
a Cine Gamma Function for the
reproduction of overexposed areas

and freely deﬁnable Custom Gamma
Curves are available.
The entire signal processing
is carried out by flexible and
modern FPGA-technology. The
high-resolution pictures of the
cinematographic world are subsampled and scaled into the
common broadcast formats.
Dependent upon which camera
adaptor is used, the signals are
transmitted at 1.5 or 3 GBits/s over
ﬁbre cable, triax cable or wireless to
the base station. There are various
types of base station - according to
the chosen transmission format - all
allowing common interfaces of the
broadcast world. These interfaces, in
addition to video and audio outputs
from the camera, include remote
Operational and Maintenance
Control Panels, intercom, tally and
data as well as return and prompter
video inputs.
The HDK-97ARRI allows the
creative and artistic picture
characteristics of digital cinema
to be achieved in a multi-camera
production. The cameras can be
operated in a conventional broadcast
manner with a vision engineer
operating multiple cameras.
The innovative use of the single,
large Super 35mm format ARRI
CMOS Optical sensor gives shallow
depth of ﬁeld, clean highlights, low
noise and natural skin tones, without
having to spend huge amounts of
time in costly post-production.
The HDK-97ARRI, which is the
result of a collaboration between
Ikegami and ARRI, really does
give the broadcaster and content
producer "the best of both worlds".
The video formats available are the
current "main-stream formats".

System Specs
The RGB-Bayer Colour Matrix
"Super 35mm" CMOS-sensor from

HDK-97ARRI is Ikegami's new camera in the Unicam series

ARRI does not require the prism
splitter used in conventional threesensor broadcast cameras.
The active picture size is 23,76mm
x 13,37mm with 3168 x 1782
pixels. According to production
requirements, this picture information
is scaled in the following HD-formats:
* 1080p /59.94 /29.97 /50 /25
/23.98;
* 1080i /59.94 /50;
* 1080psf /29.97 /25 /23.98;
* 720p /59.94 /50;
* 1080pD/23,98.
The camera has a PL-mount LAPL1 (ARRI) with a nominal ﬂange back
of 52.00mm. To allow the camera to
be used with of PL-Mount Cabrio
Lenses (with servo controlled zoom
and focus) an electrical interface of
the BTA-1005B Standard is available.
Additionally low pass (antialiasing), UV and infrared ﬁlters are
used in the optical system. Apart
from the electronic colour ﬁlters
(3200/4300/5600/6300 and 8000K)
a servo-controlled optical ND ﬁlter
(1.2) is included.
The digital signal process has an

internal accuracy of 36 Bit which
enables exact Gamma, Colour
Matrix, Knee and Detail processing.
The electronic Gain can be increased
or decreased 3dB-steps from -6
to +12dB and continually varied
within these steps by up to +3dB.
Also the electronic shutter can be
used in steps (1/100, 1/120, 1/250,
1/500, 1/1000, 1/2000 second) or
continuous variable. The nominal
sensitivity (2000 lx@3200K) is above
F 11 (Photo 2).
Depending on the transmission
factor of the lens used, the
minimum light sensitivity is below
70 Lux at 0dB gain.
With a dynamic range of about
1000%, the dockable camera
is close to the capability of ﬁlm.
The maximum resolution is 1000
horizontal TV lines and a modulation
depth of more than 55% is achieved.
Particularly the noise performance
of -66 dB is outstanding. The total
weight of the system including a
two-inch colour viewﬁnder and a
cabrio lens is about 11kg allowing
shoulder operation.

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Visit Screen at CCW
13 - 14 November
Stand 1343

For more information
Call 01473 831700 E-mail sales@screensystems.tv Visit www.screensystems.tv

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In Broadcast - November 2013

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