Shouting for joy, dying of sorrow.

If the lighting conditions are right, then I get pictures with anyone yet lens or camera beforehand. But if I try to take pictures in the gym or in the living room without a flash, then the lens is so long occupied with the focus that a good intake comes only into existence by chance.

My Conclusion:

For good lighting, this lens is the best I've kept as a hobby photographer in his hands. However, those who must shoot pictures in normal gym or in a living room without a flashlight or want, which will probably not be happy with this lens.

Addendum:

I have read in the reviews for my camera NX 3000 that also have other problems with the focusing.

Possibly the problem is with the Camera NX 3000 and not at the lens. In this case I would have to actually awarded five stars.
The funny thing is that this problem does not exist with the kit lens, although that has only one output aperture of 3.5. But perhaps it is also the combination of both parts.

That leaves only test.

When the focus is not a problem, then the lens is amazing!

Addendum and final:

I've gotten the 85mm F1.4 Samsung and could take some pictures with it. After these pictures I have to assume that the problems are of my NX 3000. I admit the lens for its outstanding image quality back-deserved score. The review I will initially be, maybe they can help one or the other with similar problems.