Returns or sets a Single indicating the contrast for the specified picture or OLE object. The value for this property must be a number from 0.0 (the least contrast) to 1.0 (the greatest contrast). Read/write.
expression.Contrast
expression Required. An expression that returns one of the objects in the Applies To list.
Use the IncrementContrast method to incrementally adjust the contrast from its current level.
This example sets the contrast for the first shape in the active publication. The shape must be either a picture or an OLE object.
ActiveDocument.Pages(1).Shapes(1).PictureFormat _ .Contrast = 0.8