I've been trying to find a polytuner where you can choose what tuning you want (beyond just standards and drops). So far no luck, but surely there must be one???
I don't think there is one, pretty much the only ones on the market worth a damn are the Korg and TC Electronic ones. I was looking into this a while ago and it's something to do with it being unable to differentiate harmonics from open notes with open tunings or something.
http://www.thegearpage.net/board/showthread.php?t=...Someone there sums it up much better than I can.
hmmmm :/....... fuck you physics