Why Weitwinkelvorsatz and no further lens

Now that we have a system camera (Panasonic G3) bought but the wide angle was me covered only suboptimal.
A fast lens with 20 mm (40 mm KB) is "normal" in place and the possible 12 mm (24 mm KB) seemed to me if the price offered and the light intensity to be too expensive.

So I rummaged for Wide intentions and came across this 0.5 Weitwinkelvorsatz. Decisive for the purchase for me were the following two points:

1. There is a possibility by the unscrewing of intent to create macro shots - which is not possible with our previous lenses.

2. The adapter of 46 mm to 52 mm of the facing may be used on both the 20mm lens and zoom lens in the kit.

The offered optical quality is fine. The tactile quality is super because of metal (probably aluminum). The threads are cut cleanly and the cap can be screwed on the lenses simply. Even the adapter from 46 mm to 52 mm corresponds to this quality.

The only drawback of such a combination is that both the camera electronics as well as the RAW converter no idea of ​​the adapter have - so who needs the convenience of an automatic distortion correction by camera and software, must choose a much more expensive wide-angle lens solution.

I am completely satisfied with the essay.