As far as I know, your existing options include (for 47XL Digitar) either the P3 Custom Recessed Board that I approached SK Grimes about making some 4 years ago for one of my clients, or a Sinar Digital Lens in Sinar Recessed Board. Sinar does not sell stand alone recessed boards for the P3, that I know of.
http://skgrimes.com/thisweek/1-16-06/index.htm
The advantage of the SK Grimes solution is cost, the disadvantage is the difficulty of changing the aperture and securing the sync cable due to the deep recess. The advantage of the Sinar is easy access to aperture/sync post. However, the options Sinar offers at that focal length do not provide as much image circle coverage as the 47 Digitar XL.
Steve Hendrix
Thanx, Steve...
With the image circle of the 47XL, I think I can do without anything wider (than 100 degrees) if I can stitch to use the whole 98-113mm image circle.
...but can I use a sliding back with this set up?
My P3 was converted from a P2, so it has more movement than a standard P3, so I might almost have enough camera shift, vertically anyway.
It would be nice to use the P3, but the P2 is another option... and I could use a mask on the 5 * 4 ground glass with the bino viewer (even if I had to re-focus with live view).
One option might be a lensboard or two with offset holes for digiback adapters.
I am thinking of putting a set of Apo-Digitars in electronic Shutters ¿eShutter? and this would solve many problems... and allow me to use it on my 10m tripod. (remote stitching would be nice).