Capture XHG1 via HDSDI as 25p??
 

We're using our XHG1 as a third camera in a studio talk show. Camera is set to 1080 25f. We capture footage via the HD SDI, going into an AJA IoHD, then capture that as ProRes 720. The problem however is that I can't seem to capture the frame rate at anything but 50p, when I only want 25p (so that I can combine the Canon footage with RED footage and perform a multiclip edit in FCP).

Does anyone know how I might be able to get 25p? I'll try contacting AJA also, but thought someone here might have some helpful suggestions...thanks in advance.