First, I need to correct my previous post. The 4x4DPS gives a straight TTL view, and is not the same as looking through the WLF of a 500/200 camera, which has a mirror in the path that inverts the image.
As far as the "front" standard, I replaced it completely with a new one built from scratch. I added about 10mm of gearing for front swing movements and recessed it about 2mm further back so that I would not lose infinity focus when using any movements. I also made the front standard a little larger so that I could also use the PC Mutar. This way I could have more shift optically, and not vignette when using the body movements. There were also various other minor changes to make it work better / more ergonomic (smaller locking knobs, Arca-Swiss foot replacement, etc).
As for sharpness, pixel accurate focusing and sharpness can be obtained using live view equipment in the studio. In the field, without live view, you cannot expect the same level of focusing accuracy, since optical viewing on the ground glass is not a fair comparison, but it still works quite well and as good as any view camera that also relies on ground glass to focus.
The bad news is that I am retired from making any more of these cameras. It's too much work, tedious work, involving custom tool/die, laser alignment, anodizing subcontractors, etc., and too many things can (and do) go wrong.
