Larry Mendenhall , Aug 23, 2005; 03:42 p.m.
If you can, dig up the View Camera Sept.-Oct. 2004 issue. Kerry Thalmann tells you all you need to know about lenses that will work with your camera.
As I understand Kerry's article -- and if anyone catches an error here, please chime in and correct it -- you have to determine the minimum extension of your camera (it looks as if that's 55mm for the Shen Hao) and then add 38mm to account for the back. For your Shen Hao that would add up to 93mm as a minimum extension. If the lens you want to buy has a flange focal distance (FFD) greater than that mimimum extension then you're OK. If it's less than that, it's not going to work.
Kerry's article (by the way, thanks a lot, Kerry. it was a big help) has a table of lenses with flange focal information. He lists the Nikon SW F8 with an FFD of 97. It also has an image circle of 235mm which is comfortably more than the 177mm Kerry lists as the absolute minimum. So if I'm right, the f8 90mm Nikon should work without a recessed lens panel.
Good luck and enjoy the back. I like mine.