I have tried several different avenues to convert a pdf to a grayscale tiff. There have been a few forum posts with ideas on how to convert using RasterCachedImage and RgbToDeviceGrayConversionStrategy but these do not produce an appropriate grayscale file.
Do you have any workarounds for this conversion?
Currently, I have tried tiffSettings.Depth = ColorDepth.Format4bpp and tiffSettings.Compression = CompressionType.CCITT4; which produces color.
Also, I have tried tiffSettings.Depth = ColorDepth.Format1bppand tiffSettings.Compression = CompressionType.LZW; which produces bitonal.
Please provide insight on how best to convert a pdf page to a tiff grayscale page.