PeterLHughes: There is a much easier and cheaper way. Shoot transparency film with a 5"x4" bellows camera. Scan that single shot at 4,000 ppi and it will give you a 320 MP image. Your shutter speed of 1/125th sec with studio flash means that your model can have expression rather than having to hold a death like pose for half an hour. Also if you look closely at the samples in the review above you can see stitching errors which are unacceptable for professional work. If 320 MP doesn't impress you, then get hold of a 10"x8" film camera. That will give you 1,280 MP images. In other words a 300 dpi print would be 11ft high. I've just checked on ebay and you can pick up all the camera kit you need for under £1,000.
Peter's absolutely right. I get the same amount of detail with my 5x7 on 200 asa black and white film. No robot arm needed, no stitching needed. Nevertheless interesting project.
so why does it say FX on the label ????