I have heard and read various comments about the eModule for use with the RM3di. I am unsure, but think that accessory is not yet available. Apparently this device is expected to provide a real time read out of the active focus distance on the camera and the front and back focus depth that is fine tuned to the particular digital back's sensor along with a perfect hyperfocal distance. Does anyone have any more information on this product? How much is it likely to cost and when will it be available? I have also heard some speculative comments about the device not being accurate, but if such an accessory were actually available it seems it would greatly enhance the fuctionality of the Arca technical cameras. Is there any more information available on this topic? Charles