HI GUYS ive just got a4/5 wista camera im new to 4/5format can any one tell me how to use it.it has a150mm lens .the camera is wood and brass and folds iuse i use a mamiya rz67 at moment i may of jumped in at the deep end but i just want to learn i no about the front and rear standards i just want to no what to do after setting the standards.menythanks