The ImageQuality enumeration defines the named constants for lossy and lossless image quality settings. It is used for the ImageQuality property of the ICompressionSettings interface. 

Possible values are:

IQ_LOSSLESS = 0,
IQ_JPEG_MIN = 1,
IQ_JPEG_LOW = 50,
IQ_JPEG_AVERAGE = 80,
IQ_JPEG_DEFAULT = IQ_JPEG_AVERAGE,
IQ_JPEG_HIGH = 90,
IQ_JPEG_MAX = 100