Deliver what you would expect

Equal first: I have this intermediate rings only ordered because I wanted to know whether:
a) you can actually achieve better results than with an achromat with extension tubes
b) get along my camera (Lumix G2) and my lenses (Lumix 14-42 and Lumix 45-200) at all with intermediate rings.

To a) I think yes. Fringing I could not recognize, sharpness and contrast were great.
to b) To say it with Radio Yerevan: In principle, yes ...

This must be sure to explain. Indicated that these intermediate rings of a lens adapter MFT - (30mm long 9, 16,) and a body adapter thread> MFT exist> (52mm) thread, three spacers threaded> Threaded.
In fact, be the effective lengths of the flange 7, 14 and 28mm (which in this case, but is helpful). What's the matter but very devalues ​​that one definitely has the length of the two adapters together by 16mm on the cheek. Thus it is with the type of construction short focal length lenses MFT even without an intermediate piece vigorously in the macro area.
14-42 with the lens it is necessary to zoom up to a few mm of the object. In the 45-200 the matter is a little more relaxed, but (as you can read anywhere, too) is without a tripod hardly chance of sharp images, especially as the image stabilizer in the lens without the electric transmission does not work through the extension tubes.
And there is already the 2nd issue. The lack of transmission can not focus manually (at least in my two original lenses). This is only possible through distance or focal length. Up to this point there is therefore no reason for point deductions.
The visit, however, for the lens adapter whose MFT connection is so tight that he heavy and the other not locks at a VERY lens.

+ Full Metal !!
o Does basically what you would expect
- Lens-side connecting MFT much too tight
- Screw the elements is very cumbersome (approximately 2.5 turns / part)

Conclusion: For the well 5 I got the assurance that it will be worthwhile to invest in a set of 80 automatic extension tubes. The there for this price but not at Amazon :-(