So I will take my Pentax 67 to the guy in a shop have a look and see if he accept it to give me a Mamiya 67. My only doubt is if it is recomended to use Mamiya 67 for landscapes, if it is though as Pentax 67. Because I cycle a lot with my camera on my back and I use it very often in the field. And as I can see Mamiya 67 is a Studio camera isn't it? But I wan't use it for portrait too.