Currently two versions are sold here at Amazon that the accessories (holder for mounted slides, holder for film strips, Opaleszensscheibe) look identical, but operate visually slightly different. On the one hand, the construction "(Custom Lens 52mm filter connection) (large 10-diopter close-up lens with pipe with slide holder-Opaleszensscheibe)", on the other hand, that's the point here, the structure (camera with T2 adapter) - (small 10 -Dioptrien-up lens with Zoom tube with a fixed aperture 16 with slide holder-Opaleszensscheibe) ".
I have tried both, but could not test in detail. However, it is clear that the first structure is optically complex because their own lens plus a large close-up lens is more glass and therefore more distortion, CAs, etc. can occur, at least that is my impression when testing with the Nikon D40 with the 18-55mm kit lens , The first design has the advantage that the Slide Duplicator mechanically primitive and is therefore cheaper, because the zoom mechanism is omitted. 55 mm are not enough on Nikon APS-C sensor but for frame-filling shots of a slide, but it must be about 70 mm. For functioned autofocus and auto exposure setting (TTL) easily.
The zoom lens on the other hand brings Repro the small format slide on the housing of the Nikon D40 without any problems Full Frame (with magnification factor of 0.7, the scale ranges of 0.6 to 1.6, ie, a full-frame sensor would not fully utilized). The Diatisch is before the pipe can move freely in order to zoom in stronger can choose the cut. This complicates somewhat reproducible recordings, but the horizontal tilt of the image as the zoom factor can be ever secure with the bolt. Then only an up and down movement of the Diatisches remains possible. With practice you should be able to duplicate the slides blind if you realize how the holder must be accurately positioned. Focus or shooting distance can and must not be adjusted, diaphragm 16 should it judge.
The disadvantage of the zoom lens Repro is that the exposure control is lost, because the camera does not receive data from the lens. My external Nissin flash (Speedlite Di622) could not unlearn to verify themselves to the Nikon TTL flash, so the Nikon is not triggered, because they then also an objective expected that provides your data. The solution was to change the internal flash of the D40 Nikon TTL to manual and use this (then worked with the Nikon SB400, did not want to again test the Nissin). At the highest level flash in about 20 cm distance from the white wall was the exposure to the internal flash then well (ISO 200, fixed aperture 16!), The brightness can then be most easily by the wall distance regulate. The SB400 is naturally even stronger.
Although the Nikon D40 at ISO 200 has a good sensor, it has to beat for images with high dynamic range no chance of the slide film. Ie., One has to decide what is to be exposed correctly (as in bright sky above a market scene with shadows).
Only 4 stars, because basically this primitive, mechanical precision of the produces only mediocre construction, the price-performance ratio is bad if you z. B. with a Nikon lens 18-105 mm compares that u full glass. Electronics infected. I'm not sure what sharpness is ultimately attainable because the slides did not come from a top camera. The colors are very nice (white balance to flash), which is ultimately more important than the final sharpness.
