Class teleconverter!

The teleconverter I use on a Panasonic Lumix FZ 150 mostly for nature shots.
The material is very durable and well-made, so it shows the connecting thread which can be screwed easily and cleanly.
(This of course also applies to the supplied adapter tube)

The focal length range is increased by a factor of 1.8x and thus to get in the FZ 150 to a whopping 1080mm.
Fortunately, I could see only a small aperture loss (loss of light) in my tests, this is often times a problem with teleconverters.
The very good recording quality of photos pleasantly surprised me.

By teleconverter the FZ 150 become indeed "something" heavy and bulky, but you can make yourself at a shutter speed of 1/200 still good handheld shooting.

CONCLUSION:
I would recommend the teleconverter without hesitation, but for the relatively low price you get a solid processed product, good optical quality, and sufficient focal length magnification by a factor of 1.8x.

- Good price / performance ratio

------ Important supplements 15.08.2013 relating to the review of SK ------

Who basically uses only the "automatic mode" a camera, for the tele-converter / macro lenses and other optical accessories are only suitable.
In most cases, the results will not be so great. (It depends on many factors that are usually not taken into account by the automatic program ideal)
Anyone have some experience with the basic settings as zBWann use I did what exposure time / aperture / ISO, will be pleased with the results.