The numbers are magnification and exposure factors so you can set an appropriate exposure compensation for the bellows extension. You'll have to figure out which scale applies to your use. I suspect the side with the high magnifications is for use if two bellows units are ganged together, and with the single bellows you will use the side that starts at 1x, but I am not familiar with this unit, nor am I the king of macro. If you can meter through the camera with the lens stopped down to what you are going to shoot, like my k1000 will do, you can forgo it.
Originally Posted by bobwysiwyg
Last edited by JBrunner; 02-09-2009 at 12:02 PM. Click to view previous post history.