Converting greyscale/color to black & white

[sami]

Hello,

I would like to convert greyscale tif (JPG compression) to black and white TIF G4. Is this possible and what is the command for this?

I am using nconvert.

Thanks in advance,
Sami

[Guest]

Found the answer form nconvert subsection! it was -bitionary nodither.

- Sami