Circular, practical, good!

Positive
If you forget to remove the lens cap before turning on the EX2F, the camera refuses to start. First you have to turn it off, remove the cover and then turn it back on. If you have secured the lid with the included slightly short geratenen loop, it bäumelt during shooting around somewhere. There are instead those automtatischen cover. If you have removed the protective ring of EX2F, it can be quickly and easily mounted. When the camera he goes on automatically when you turn off it closes well. An invention so that completely eliminates the fundamental problem of operational readiness.

Not quite as positive
- You have to play around a bit to find the best rotational position, otherwise causes the slats a hefty shadow on the screen. In practice, however, comes in front only when flashes of very short distance.
- The slats do not close completely flush in the middle. Thus they do not provide 100% of dust for the lens. In practice, however, this problem is likely to be negligible.
- The lens cap from Samsung looks much higher quality. Lieb and gladly I would have spent twice for this product, if it would just look wertig as the original.

Conclusion
- That thing is awesome and the price also cheap.