Thank you very much i didn’t know about this issue with Sony A7r. I never scan 6x6 before but exactly as you say if I can find a camera around 40M I would avoid stitching otherwise I have to do it. Another option is the Sony a6300 or the Fuji x-e3 but I don’t know much about digital cameras maybe some other suggestion to look around? Is it better an old FF like Sony or Nikon or an APS-C like the Fuji x-30 or Sony alpha series for my type of use?