Here's an updated version of cns2mtz. The new version automatically
merges anomalous data, generates a full set of CCP4-style free sets from
the CNS test column, completes the data (unless you tell it not to), and
can take the cell and spacegroup information from a pdb file as well
as from the command line.
It converts every file I have automatically, but I haven't tested the
output extensively. More testing would be good. Mail me with any problems.
x86 Linux binary available from here:
http://www.ysbl.york.ac.uk/~cowtan/cns2mtz/cns2mtz.html