The slide duplicator is in my opinion very good for digitizing a manageable number Dias. The Committee mentioned in several reviews Time required for the digitization of slides in the order of about a minute, I can confirm. If one is prepared to accept a black border around the photo while photographing a slide shortcomings such. B., the time required may be indeed reduced to about half a minute, but I invest again in the post with an image editing program. Overall, the results depending on the existing slide material good results. Only the accurate focusing then prepares a little effort, when the light source is too weak. I prefer a star from the supplied adapter rings. In my opinion, 55mm filter thread on SLR lenses in the standard class are so common that Kaiser could a corresponding attribute. An indication perhaps to suitable slide frames: glass frame are too broad for use and must be "moved" into narrower glassless frame to fit into the Diaaufnahme.