The intermediate rings are the perfect solution if you want small luggage (and without major investment) make macro shots.
Who wonders if it fits the lens Park: In the manual (English only) is that the focal length of the lens should be greater than the length of the intermediate ring combination. The intermediate rings act precisely manufactured bayonets raced a neat (and again). The transfer of the lens data and autofocus worked without problems (assuming that the motif in focus range is that of course is then very reduced).
From my testing with an Olympus Pen E-P3 (and of course with every OM-D and other PEN function).
The best results I achieved with the following lens-ring combinations + tripod + Funkauslöser:
* 10mm intermediate ring + 20mm Panasonic Lumix G F1.7 / 20 mm (distance to the subject about 4cm)
* 10mm + 16mm intermediate ring + 45mm Olympus M.Zuiko Digital (distance to the subject 10cm)
The results are similar, the 45mm lens is the risk to trigger low and the bokeh of course a bit creamier.
Also tested: ED 40-150mm Olympus M.Zuiko Digital 1: 4.0-5.6 with a and two intermediate rings. This works well, but is because the light intensity is not as exhilarating (and Bokeh not as nice), but that's whining at a high level.
Tripod not harm, remote release or trigger time, a lot of light and light intensity as well, otherwise you have to turn up the ISOs because light cost between rings clearly (which is on the principle of intermediate ring and not to this product).
The price comparison note: These intermediate rings (MK-P-AF3A, for currently 49.90 EUR) are with metal bayonet, there are from the same manufacturer also a cheaper version with plastic bayonet (MK-P-AF3B for currently 32, 33 EUR), but at only 18 euros difference, I then prefer the more robust variant chosen.