Checks whether the AnalogGain attribute is present.
This field reports the Analog Gain (also known as Inherent Gain or simply as Gain) that was applied during the Acquisition of this Image. The Analog Gain is a property Inherent to the Detector and it specifies how many electrons correspond to 1 signal unit (photon) detected. Gain is reported in terms of electrons/ADU (analog-to-digital unit). A gain of 8 means that the Detector digitizes the light signal so that each ADU corresponds to 8 photoelectrons. NOTE: In the case of Point Detectors the value of Analog Gain can be set freely by the user. Conversely, in the case of Cameras, it is common for the Gain to be preset by the Manufacturer to minimize noise. In this case, either the Analog Gain cannot be changed or the user is given the choice of selecting between a few preset Analog Gains values upon Acquisition. Finally, several Cameras might have so-called Automatic Gain Control (AGC or AutoGain) that will automatically adjusts so the full range of the Analog-to-Digital Converter (ADC) is used. Unless you can turn off the AGC, the use of these Cameras are highly discouraged for quantitative work.
Returns:
| Type |
Description |
boolean
|
true if the attribute has been set, false otherwise
|