Technical Information: Sony HD System Cameras
V6.0 / 03-2014
18
2.5. Latest Feature Set
In order to meet the increasing demands of the operators for a high-end camera
system, Sony included many new features into the HDC-2500-series which are
introduced in this chapter:
2.5.1. OPAC Function
A newly developed
OPAC-function
(OPAC =
O
ptical
A
xis
C
ompensation) allows
adjusting the optical axis of the lens electronically. Usually, each zoom lens shows a
certain tolerance level in regard to its optical axis. When zooming in, it can happen
that the center is moving out.
In a traditional 2D production, this is not a big issue, but in 3D mode, where the
zoom lenses of both cameras have to be synchronized perfectly, a tolerance in the
optical axis adjustment is critical and will create big problems. The HDC-2500-series
comes equipped with the OPAC function allowing to control the optical axis and to
correct it electronically (over H and V) without losing resolution.
The scanning area of the new CCD is slightly bigger than the conventional
1920x1080 HD pixel raster. As such, the 1920x1080 raster can be shifted (via menu)
to perfectly center the optical axis of the lens.
2.5.2. ALAC-2 Function
ALAC (Auto Lens Aberration Control) was already introduced along with the HDC-
1500R-series and the HSC-300/HXC-100 system cameras back in 2009.
ALAC-2 is the second generation of the ALAC function and allows aberration control
in both directions (H and V). It is a fully automated function and available with all
zoom lenses supporting the ALAC functionality (please contact the lens supplier for
further details).
ALAC helps to improve the longitudinal chromatic aberrations of the lens.
Please refer to picture 39
2.5.3. Adaptive Matrix Function
Traditionally, Sony HDC-system cameras are equipped with a wide choice of matrix
adjustment functions.
All HDC-system cameras feature:
(A)
USER MATRIX
Conventional adjustment of the matrix
(B)
MULTI MATRIX
Integrated 16x vector color corrector to individually adjust a selected color
(hue and saturation control)
(C)
PRESET MATRIX
Factory preset matrix adjustments can be recalled via menu
In addition to these common matrix features, the new HDC-2500-series features the
new Adaptive Matrix function.
The chart on the next page shows the individual adjustment items for the matrix
functions of HDC-cameras.
