on 1 November 2011
this product is brilliant, the only downside is that the manual is pants! it describes all of the functionality but doesnt explain how to actually use it, but persevere, when you get it all set up it works superbly. After two years I had a minor problem and sigma swapped te whole thing at no cost and with no quibble. I cannot recommend them highly enough, I just may apply for a job writing useful manuals for them!