Buyer of the equipment I had this initially have expected too little! From the old analog technology I knew up to 3 different degrees of extension tubes (usually to buy as a set) and was inclined to purchase immediately 2 extension tubes. However, I then once ordered 1 intermediate ring. And my caution has paid off: Combined with the OLYMPUS ED 50 f 2.0 Macro capture images from 13 mm length image full format! The distance Front lens lens about 3 cm (estimated). Already for the use of this solution I would protect the front lens with a permanently installed UV filter! 2. An intermediate ring would probably object "devour" and is therefore not applicable. Combinations intermediate ring and teleconverter or vice versa are possible. Both versions are certainly interesting, but I'm still working and can therefore pass on any experiences. In any case, this should be worked because of the light reduction with tripod! Conclusion: No pitiable purchase!
