One can not expect miracles optical for the price is clear and thus my expectations have been met. Sharpness and processing is ok and the extra macro mode is very nice. Unfortunately, it comes with my Panasonic HDC-S909 to a strong vignetting at full retracted Zoom, especially in the corners. In this position, the thing is actually not to use because you as well as extremely strong sees the overrun of the image stabilizer. Here it is not only a slight dark, but the corners are black, as if someone is holding a round pinhole before.
Man has a little back to you the dark corners away gets, thus determines the 0.5 specification in my case, not really. My Panasonic has 35mm in the furthest position 0.5 would then 17,5mm and necessary to get back so I guess to 20-24mm. For me, the price is still ok.
