thank you all for the replies, all we know that the fast road is to get a view camera, that's the most simple and natural way.... of course, (i'm building one right now) ... but it is not the topic issue, I was just wondering if there is a way to get it in MF camera and specially in the mamiya's world. I saw this brand that produces some adapter but only for mamiya 645, and then i found this, maybe it can works.