@MarcioK The LX100 is a great camera, and easier to use than the NX500. The advantage of the NX500 is interchangeable lenses. According to DPReview, Samsung has indicated they will add focus peaking during video shooting in an update to the NX500.

http://betterfamilyphotos.blogspot.com/2015/03/samsung-nx500-unboxing-and-first.html

Kit at $758

http://www.ebay.com/itm/NEW-Samsung-NX500-Smart-Camera-with-16-50mm-Power-Zoom-Lens-Black-/221713426615

Taking advantage of crop mode and a zoom lens to stay dry while shooting birds in the rain:

Kit with various other stuff (SD card, tripod, bag etc) at $699

http://www.amazon.com/Samsung-Digital-Camera-16-50mm-Battery/dp/B00T6RTXT2/

Smaller kit at $679

http://www.amazon.com/NX500-Mirrorless-Multi-Coated-Carrying-Microfiber/dp/B00TQ9ZFZ6/

The NX500 is very good at acquiring focus lock and if CAF is enabled, maintaining autofocus, in normal lighting conditions. If I shoot a continuous burst with CAF, I usually get a higher percentage of shots in focus compared to the Sony a6000.

One of the features that has been touted for the NX500 is its ability to record 4k video without the need for an external recorder. There are currently only a few cameras that offer this feature, and even fewer at this price point. Unfortunately, the NX500's 4k video mode has limited usefulness because it is cropped 1:1 from the sensor, which is about a 2x crop -- a 16mm lens looks similar to a ~32mm lens.

Another reason the 4k is difficult to use is because it will record only to H.265, a video codec that is highly efficient but still very new, and is unsupported by most nonlinear editors. Samsung does include a software to convert H.265 to H.264.

http://betterfamilyphotos.blogspot.com/2015/04/samsung-nx500-review.html

The price right now including the 16-50 PZ lens (a very good quality, black compact lens that is also silent for video) is $699, including shipping. So, for $50 you get this nice lens. The lens by itself sells for $299 (white); $349 black.

So anyone buying an NX 500 with lens for $699 and unbundling and selling the body for $649 and the black $349 lens for anything more than $50 is just making a nice profit, off you... So, if you already have the lens, why not do the same thing and not buy the $649 body? Buy the bundle, and sell the lens (but only if you already have it).

No one told here that it is for US buyers. Just get your eyes slightly above.

In both our real-world shooting experience and lab testing, the NX500's image quality is very good, especially with low to medium ISOs. Details are crisp and sharp, colors are pleasing and the dynamic range is very good. High ISO performance is generally good as well, particularly up to around ISO 1600, with a good balance of detail and noise reduction with in-camera, default NR processing for JPEGs. At around ISO 6400 and higher, though, detail loss is quite noticeable with a lot of blotchiness and smearing from the NR processing.

http://www.imaging-resource.com/PRODS/samsung-nx500/samsung-nx500-conclusion.htm