Hi ! I have a question for those hwo ownes 6x9 /6x7 camera . Camera with large format lenses!! I plan to have one but have no idea how to choose lenses... i have hasselblad 500 cm with normal 80 mm planar lens... what is the best normal lens for 6x7 6x9 format ? (Lens that used in large format).. I hope that my question is clear..sorry for non professional language, guys )