Can you have a more general idea?
Is the distance from the lens mount flange from to the photosensitive element between the interchangeable lens camera. In the design at the beginning of the fixed bayonet flange from each lens, for later design can be achieved after installation to bayonet infinity focus.
The distance of the flange of the bayonet can not be designed arbitrarily, and the width of the small flange can be shorter than that of the photosensitive component. The whole body of the 4/3 system can be fitted with a full lens through the connecting ring
Different brands from the bayonet flange is not the same, Canon is short, Nikon long short distance is more convenient. The flange ring by installing other long flange from brand lens.
