What are macro rings are ordinary hollow tubes that change the working length of your lens. That is, it’s just a tube that is placed between the lens and the camera.
How they work – imagine that you are focusing on a fixed lens, one of the old ones, where the entire lens unit (all lenses) goes when focusing, you twist the focus, all lenses go slowly (the trunk of the lens lengthens), leave and leave as far as the design allows you lens. But the focus is spinning to a certain value and in order to draw out (push back) we add rings even more. Of course, in modern lenses, focusing sometimes happens differently, because the explanations are given just for example. Continue reading