Have the ring flash dried bought my Markros to give some depth. The flash itself does not provide superior quality in terms of feel, but does what he should. Very annoying, however, is that according to the description 4 adapter rings are accompanied in varying sizes. In practice, are also 4 rings in the package, however, 2x M58, M55 and no. I need for my Tamron 60mmm strongly the M55 ring! Have the first shipment immediately upon receipt because of this lack exchanged for another package: Again 2x M58 and M55 not - apparently seems fitted incorrectly, the whole series! So if, like me, has to rely on an adapter ring M55, which was the Dörr DAF-14 probably not buy ... or else he buys externally a ring of this size .... Too bad, I am disappointed!
