I forgot to mention-
exporting dpx in ae is only possible in 10 bit.
really, i tested footage in premiere, one via dynamik link, the other via dpx 10bit and yuvv10 bit- no difference.
you can see this by applying a dramatic curve effect and then watch the rgb parade- a lot of gaps menas 8 bit, at 10 or 16 there are no gaps.
anyway, there is a tool called dpx plus, it s for free and allwos you both to import and export dpx files even in 16 bit in ae and pp !