My camera is a Tachihara 4X5 and Nikon 210W. Both are in excellent condition. I may not understand the process of focusing and movement. I do use a Toyo loop. When I focus the entire image is not sharp. Usley most of the foreground and middle of the image are sharp. The background is out of focus. When I stop down to F32 or F64 the image is to dim to tell if it is in focus. Should the entire image be in focus when viewed through the camera if all movements are correct? Would it be better to point the camera down and tilt the back to get the entire image in focus?