What you should know in front of purchase:
- With lenses that have no aperture ring, the ring will only work on tricks. This one, however, runs the risk of damaging the camera and is fiddly's bargain.
- Focusing is going on just by looking at the entire camera including lens moves back and forth.. Without tripod thus goes nothing. Better one uses a Makroeinstellschlitten because you can adjust the distance so very fine.
- Photographing is only in manual mode or aperture priority mode.
- The lens reversal leads to strong light losses. So you need a very good motive illumination.
- The lens is reversed, the contacts are on the outside. They can be quickly soiled or damaged. If you want to buy any additional cover ring for it is better to take pictures only inside.
But there are also positive, because you can magnifications (eg magnification ratio of 4: 1.) Reach the subject.
Mir were the limitations previously known largely why I do not regret the purchase.