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ARRI Imaging Technology
Each component of the D-21 has been purpose-built with one goal in mind: to create
the most gorgeous cinematic images possible. Those images are the result of a custom
designed CMOS sensor, a carefully crafted optical low pass lter, a powerful imaging
hardware engine and advanced image processing algorithms. Having full control of the
D-21's imaging chain down to the smallest detail allows an optimization of the whole
system far beyond what would be possible with off-the-shelf components. The smart
orchestration of all these proprietary components is ARRI Imaging Technology (AIT).
AIT, which is in constant development, combines ground-breaking research and
development with knowledge, feedback and suggestions gleaned from an on-going dia-
logue with professional lmmakers. AIT provides super sharp, alias-free images through
over sampling, a nely tuned optical low pass lter and advanced image reconstruction
algorithms.
Image processing advances incorporated into the D-21 include increased sensitiv-
ity, with 'linear' HD output ranging between EI 100 and EI 800 equivalent, as well as
optimized sharpness and enhanced, lm-like color reproduction.
AIT also ensures that crews can concentrate on the creative aspects of making
images, by automating many of the technical aspects. The D-21 has, for instance, an
automated black balancing circuit (Correlated Double Sampling - CDS), which continu-
ously calibrates the black level of each pixel in each frame without any user interven-
tion. In addition, an automated Defect Pixel Correction (DPC) guarantees that no single
defective pixel will ever be visible. DPC is a highly sophisticated process that analyzes
every pixel plus a surrounding pixel eld in every frame (for a staggering total of 2.5
billion pixels analyzed each second) in real-time as the camera is running.
Through AIT, the D-21 produces outstanding images with a cinematic look and feel,
high contrast, the highest dynamic range and the most lm-like color reproduction of
any digital motion picture camera.
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