My recommendations:
- Better order an adapter with a larger diameter and adapted by Step up adapter on the appropriate filter diameter.
- With manual lenses can be operated easily, the aperture setting. AF models are a little more difficult.
- Live View mode simplifies focusing.
- Move the camera toward the object or away from the object for focusing.
- Manuel focus lenses from all manufacturers can be adapted well. Only the filter ring must fit.
My experiences with different focal lengths with APS-C sensors:
28mm: Can see into the eyes of a spider.
35mm: A Raisin can be shown in full format.
50mm: No special macro properties. Perhaps with extension tubes?
For the price the reverse position is a very nice pastime. Not fail, everything is hard;)