There is an additional camera back attachment/ adapter that will allow for the image circle, or "cone" to expand past the 4x5 inch film periphery to allow the use of a 6x17 cm roll film back. This is available many places such as Badger Graphic.
That item is approx $595 new
See this link for comments:
http://www.largeformatphotography.in...-hao-6x17.html
I personally would choose to limit the addition to 6x12 format Graflex compatible roll backs made by Horseman, Calumet, etc,...
These backs are widely available in the used market.
If you want all of that extra weight on the rear of a 4x5" format camera you might as well choose to go with a 5x7" field camera and then use the 4x5" reducing back.
This is a much more versatile setup for the larger panorama while sacrificing nil weight in comparison to the DAYI attachment to your proposed Shen Hao.
Anyway,
My2Cents...
Bill
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