645 lens on GFX?

In spite of bidding on Minolta MD Zoom 100~200mm, the seller send me Mamiya Sekor Zoom ULD-C 105~210mm by mistake after a success bidding. Then I happen to check it in detail and an imagination came up into my mind, about the probability of applying Mamiya 645 lens on Fujifilm GFX large format image sensor? All the anxiety would be eliminated on the problem of vignetting if ordinary 135 lens is set on GFX format. Comparison of imaging areas between 645 and GFX, smaller GFX has better advantage than 645. Interesting at all, if GFX is invited as one of my favorite instrument. Remembering the past, I do not have so good image on 80mm/2.8 for 645 when compared with Hassel Planner 100/3.5? As it was on the silver salt film, see to it on the recent digital image sensor again. Avoiding initial trouble that happens in newly released devices, I'll get it at least half a year later, dream and imagination becomes bigger and bigger like a balloon, interesting! Magnesium panning head for tripod was purchased yesterday at Umeda Photo shop at bargain price, 2/3 of ordinary price. Velbon PHD-62Q with base plate fixation fits well on SX-601 in good balance. The operability in 3 dimensional movements are smooth and acceptable for my use. Thanks to special construction the aimed position does not move when tightened and fixed, in addition the tilting movement in pitting and rolling movements are smooth without any inconvenient shake. The manufacturing technology in our country exceeds world standard level. High priced European blands should not prevail here in Japan already.