VIA Technologies EPIA SN-Series Specifications download pdf (Page 111)

FASTER Engineering Model

A screenshot of the camera control center software is provided in Figure 83.

Figure 83: Camera control center screenshot

As it can be seen the accessible camera functions are:

 AEMode, is the Automatic Exposure mode and during acquisitions is always

set to manual in order to avoid different exposure setting between frames; the

AEMode must be physically set on the camera using the AEMode wheel;

 Tv, is the exposure time, it can be set between 10

s and 2.5*10

-4

 Av, is the aperture value, its values depends on the mounted lens; for the

Canon EF28 F/2.8 apertures varies from 2.8 to 22. The Aperture or F-number

is = / where D is the lens exit pupil diameter (which only sometimes

corresponds to diameter of the outside lens in the assembly) and gives a

measure of the incoming light flux, the greater the F-number the less light per

unit area reaches the image plane of the system. The amount of light

transmitted to the detector decreases with the F-number squared;

 ISO, measures the sensitivity of the image sensor, change the ISO value

equals to set a different gain to the output sensor signal. At higher ISO values

noise may become clearly visible (artifacts) on the acquired image so the

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VIA Technologies EPIA SN-Series Specifications Page 111