I have a Canon SLR EOS7D and a macro lens of 100mm focal open at f / 2.8. The duplicator without its lens mounted on the lens unfortunately not possible to frame a slide full 24x36. Moreover, the additional lens alters the quality of the image. But I am fortunate to have retained tubes Leicaflex extensions for 40-year old (!), Who fortunately adapted exactly to the tube of the duplicator, which I doubled the length. Result: useful field of just over 24x36mm device, which sounds very good: no image loss. I am very satisfied with my purchase, but thanks to angel-tubes extensions! As light source, I use either clear skies, or rather an LED lamp (very white light) placed behind some 20cm dispositif.Kaiser - Slide Digital Duplicator - For compact digital cameras and SLR (Germany Import) A possible and interesting development of this duplicator: making the adjustable tube, to double its length ...