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IMPORTANT
INFORMATION
Changes
Panalux provides this manual 'as is' without warranty of any
kind, either expressed or implied, including but not limited
to the implied warranties or merchantability and fitness for a
particular purpose. Panalux may make improvements and/or
changes to the product(s) and/or the programmes described
in this publication at any time without notice. This publication
could contain technical inaccuracies or typographical errors.
Changes are periodically made to the information in this
publication; these changes are incorporated in new editions
of this publication.
Measuring Correlated Colour Temperature
(CCT), Colour x y
The ALLEGRA-C™ utilises an LED source that is optimized
for the film, TV, and image capture industries. Older colour
meters cannot be used to accurately read the Correlated
Colour Temperature (CCT) of ALLEGRA-C™ and other
discontinuous spectrum light sources. Older colour
meters are designed for a full spectrum source such as
incandescent lights. These meters possess only three
sensors to measure the light output: red, green, and blue. As
such, a narrow band or discontinuous spectrum light source
may not read correctly. Colour meters such as the Sekonic
C800 Spectromaster or UPR Tech MK 350 will provide
excellent measurements and include TLCI and SSI metrics
as standard.
PANALUX ALLEGRA-C USER MANUAL
Panalux have taken great care in ensuring that the CCT and
colour spectrum of gel emulations of the light emanating
from ALLEGRA-C™ closely matches traditional tungsten
and discharge light sources. This allows you to easily
place ALLEGRA-C™ alongside your traditional lighting
fixtures. If in any doubt, it is the user's responsibility, as is
customary, to shoot image capture tests when combining
sources employing different core technology—such as
HMI, florescent, tungsten, or simple RGB and bi-colour
LED fixtures—to ensure compatibility. Shoot tests using
the camera setup to be used for the project (capture
gamut, LUTs, etc.). The spectral power density curve, chip
profiles, and coordinates will be different from other fixtures.
Matching x y coordinates will only guarantee proximity to the
x y coordinates. It will not guarantee a colour match to eye or
to camera with another light source.
6
ISSUE 1.0 | OCTOBER 2023
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