One must of such a small and ideal plug-on or fill flash only wait to see what you can realistically expect. And that meets the small 20s perfectly. The coordination between flash and camera (in my NEX-6 and A99) works fantastically, incl. A white balance between the flash unit and camera! Also during fill-in flash in daylight for up to 10m distance (in daylight), the results are excellent, and even here inside the camera, the flash output of the 20ers to -1 or -2 (my preferred option) should be provided; then it is hardly noticeable again that even a flash was used. Toll!
A word about the operation with AAA batteries: My 20 has initially only works with batteries (1.5V), but not with 1.2V batteries. This contradicts the product specifications of Sony, but is in line with what is reviewed in part also on Amazon. Since then I have driven it with batteries. But now I read that users also report perfect use of batteries. So I have a test basis reinstated batteries, and lo and behold, now work suddenly. Now seems to all work out perfectly.
An "always-it-flash", which gives very good results.
