Short description of Tiff To PDF COM/SDK Unlimited License 3.4: Supports virtually all TIFF compressions, including ZIP, LZW, CCITT G4/G3, JPEG, Packbits.
Can combine multiple directories and tiff into one PDF file.
Supports Multi-page tiff file to PDF conversion.
Append to existing PDFs.
Supports encryption with 40 or 128 bit.
Can set automatic despeckling (of B/W images; removes noise) and skew-correction.