Read-only property reporting whether the selected file format/compression combination may be lossy (see Remarks).

A Boolean value.  

object.IsLossy

The IsLossy Property syntax has these parts:

A selected file format may be inherently lossy, such as JPEG, or may be lossy only when certain compression types are chosen, such as AVI and TIFF. The property will check the currently set format and compression, so these should be set through those properties prior to getting the IsLossy property.