Silicon Imaging SI-2K, User Manual

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SiliconDVRSoftware
41
SI 2K Manual
4
Main Operation Menu
Black Setting
During the initial use, the software will detect a lack of a black reference im-
age and automatically requests the capture of a reference:
Completely cover the lens and click on OK. This performs two functions. First,
the image black level is set for every pixel. Second, a bad pixel map will be cre-
ated for any pixels that are outside of the normal range of offsets and corrected
automatically in the RAW file.
There are two control areas of the viewfinder. First is the set of touch buttons
surrounding the live display. Second, for the most often used operator func-
tions, there is a nine location ‘hot spot’ grid superimposed on the viewfinder.
More information on this and other aspects of the main screen are described
in a section below.
Set White/Set Black
Set Black has been described above for setting both the black level and bad
pixel map. White balance allows the user to create a unique white balance
table based on the current image. A white card exposed to approximately a
70% level occupying 100% of the image area is placed in front of the lens
and the SET WHITE is selected. Alternatively, the loupe can be used for more
localized metering.
White Balance Presets
There are standard white balance presets to approximate the temperature of
typical lighting conditions. If a user white balance is created, this is added to
the list of options.
Gain (+/-)
The analog gain of the camera is incremented and decremented from -3dB to
12 dB in increments of 3 dB. More gain provides more light sensitivity at the ex-
pense of increased image noise, analogous to increasing ISO ratings of film.