Been here, almost done this.. Decided to ditch the entire idea-project. 5x7 Arca Swiss cameras are mostly rare.
Started with a 5x7 arca swiss. Idea and goal being modify the front of the arca swiss to fit a Sinar 4x5 frame to allow using the Sinar shutter and Sinar lens boards. The project got as far as needing a special bellows to make it all go. The results of all this produced a camera no better, in many ways worst than a 5x7 Sinar Norma.
Limitations with the arca swiss, limited rail and fixed unless the folder rail is procured. This plus the bellows limits what lenses are possible to be used with the arca. To get the most out of wide angle lenses requires a bag bellows which is another special item.
Conclusion, the resulting arca swiss monorail is simply too limiting in too many ways. It might be perceived the arca swiss is light weight,
the resulting camera was not much lower weight and very possible heavier than the 5x7 Sinar Norma.
Bernice
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