The current black level offset. When AutoBlackLevel is false this value specifies the sensor black level directly, otherwise the offset is applied on top of the automatically estimated sensor black level.
A number between 0.0 and 1.0. Values closer to zero will yield darker images, values closer to one will increase the image brightness at the expense of noise in dark image regions.
1.0 0.55 for uEye driver versions 4.80.7 and above