I'm looking to get into 6x7 photography now, and probably 4x5 photography in the future. while it seems that systems like the pentax 67 are best for lanscape/scenic/wideangle 6x7 photography, I'd like to not have to invest in a whole new system when I move to 4x5. So I'm looking for field cameras that can take lenses in the 45-55mm range for 6x7 work. Anyone out there use the Toyo 45AX or AII cameras like this? are there any expensive accessories needed to use lenses in that range? their website doesn't make it clear. thanks for your help.