SP-5000M-CXP4 / SP-5000C-CXP4
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Lens Select
Description (Control with
camera)
Note
P-Iris Lens
1) Iris position can be
remotely controlled manually
2) Auto iris control is also
available
If P-iris lens is used, the
specific model name should
be selected in Lens Select.
Motor controlled lens
1) Iris position can be
remotely controlled manually
2) Auto iris control is also
available
Video iris lens
Only auto iris control is
available
Factory Option
DC iris lens
Only auto iris control is
available
Factory Option
8.8.1 About P-Iris
New Spark Series SP-5000M-CXP4 and SP-5000C-CXP4 come equipped with P-Iris control as part of
the standard lens control function. The P-Iris system is a newly developed lens control method
designed to control the iris more precisely. Especially for video cameras in surveillance applications
utilizing megapixel CCD or CMOS imagers, it becomes a very important factor to control an iris in
order to achieve the maximum camera performance. In surveillance applications, depending on
shooting conditions, resolution and depth of field are important factors. The iris is deeply related
with these factors. If the iris diaphragm is smaller, but not too small, resolution gets better and the
depth of field is also deeper. The P-Iris system controls the iris diaphragm precisely and maintains
the best image with the highest resolution and depth of field. P-Iris can also combine with gain and
electronic shutter to keep the appropriate iris position under changing lighting conditions (ALC
function).
8.8.2 Setting for P-Iris lens being used
P-Iris lenses use an absolute setting value control system and therefore, if the following
parameters are input, precise iris position control is possible.
8.8.2.1 P-Iris lens select
Select the lens used from the P-Iris select list. At this moment, there are no 1-inch P-Iris lenses
available in the list. When P-Iris Lens Select is opened, the following lenses are indicated but they
are 2/3 inch format. If they are used, the corners of the image may be vignetted.
Table – 21 P-Iris lens select
P-Iris lens select
Description
Control step number
Open F value
LM16JC5MM
Kowa 16mm 2/3”
74
F1.4
LM35JC5MM
Kowa 35mm 2/3”
73
F2.0
8.8.2.2 Step max.
Iris control step depends on lens. The setting value uses the value stored in the camera.
8.8.2.3 Position
The iris position can be set between 0 to Step Max. 0 means to open the iris and Step Max
means to close the iris.
In the following conditions, the camera initializes P-Iris control and acquires iris position.
