NAC Image Technology SP-642, User Manual

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Select any of the following for the image trigger.
Level of Brightness Change
OFF Image trigger function not used
LOW (Low) trigger issued with large changes in brightness
MID (Standard) trigger issued with medium changes in brightness
HIGH (High) trigger issued with small changes in brightness
CUSTOM Fine adjustments of the trigger issuing conditions (HX camera only)
Brightness Standards (HX camera only)
Tracking Sets the camera corresponding to the photographic environment as the
standard. (GX compatible) Prevents trigger from issuing for phenomenon
with gradual changes in brightness (clouds, time, changes in standby
status) .
ARM start Brightness at the start of ARM is the reference
Manual Brightness after the start of ARM is the manually set reference
If the image trigger set value does not match the recording conditions, there is a possibility that an
unexpected trigger is issued [A] or a trigger isn’t issued in the required location [B]. Determine
the appropriate value after conducting a test photograph. The criteria is shown below.
Set Value Matching Photographic
Environments
Non-conforming
Photographic
Environments
Unusable
Photographic
Environments
LOW
・
Recording in an environment
where there are flickering
elements due to fluorescent
lighting
・
Recording where large
changes in the brightness
are not expected [B]
MID
・
Recording where the brightness
of the general lighted area does
not change, such as with
flashes
・
Recording where the
subjects cross the lighted
area due a lack of size
[B]
・
Recording in an
environment where
there are flickering
elements
due to
fluorescent lighting
[A]
HIGH
・
Recording where the subjects
cross the lighted area
・
Recording in an
environment where there
are elements in motion,
other
than subjects
within the lighted area
[A]
The image trigger function cannot be used simultaneously with the automatic exposure
function (AE). To enable the image trigger function while using the AE function, a
confirmation message will be displayed to disable AE. Click “OK” and disable AE
(OFF) and then use the image trigger function.
Also, when using the image trigger, the range (AOI) must be specified. Refer to page 4-46 for
details of AOI.
Caution