Not bad for a small amount, but not really good

Negatives: Because the duplicator must be screwed to the lens and is therefore rotated during focusing, a new alignment of the slide holder is then needed. This should be done only manually, to avoid overloading the drive of the autofocus. This is only possible when the camera was fixed properly on a stable tripod, cumbersome and time consuming.
Positives: In the presence of a suitable light source you get a decent image quality