D-MAX DWC-540DV Manual - page 14
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WHITE BALANCE SPEED
①
ATW Slew
ATW slew controls the rate of change when transitioning from one color thmperature to
another,
An example of this would be panning the camera from an indoor fluorescent scene of
4000K out a window to a daylight scene of 6500K.
The slew property tells the camera how fast to make the adjustment from 4000K to 6500K.
The property itself is a value from 1 to 100, with I being the fastest slew and 100 being the
slowest.
②
HYST
White balance auto hysteresis sets a threshold around the current color temperature
reading.
The measured color temperature must exceed this threshold before the current white
balance setting will change.
The purpose of hysteresis is to insure that the camera does not dither back and forth
between two different modes of operation when the meter reading are near a boundary
between the two mode.
However, making the hysteresis threshold too high will make the camera appear
unresponsive.
4) EXPOSURE & Dynamic range speed
①
Filter
The first step in processing camera response and transition rates is to apply a low-pass
filter to incoming exposure readings. This filter can be set to prevent the camera from
responding to very fast transient changes in meter readings.
The typical use of the filter is to keep the camera output stable when monitoring a high
activity scene.
②
HYST
The filter block is followed by the hysteresis block. It requires the filtered exposure
readings to exceed a programmable threshold before the camera will respond.
This can prevent the camera from dithering back and forth between two different modes of
operation when the meter readings are near a boundary between the two modes.
However setting the hysteresis parameters too high can make the camera appear
unresponsive..
The filter and hysteresis blocks effectively control what scene changes the camera will
respond to. They can be set to make the camera effectively ignore changes that are too