So far me the HVLF20AM has not disappointed in such situations. The ability to flash directly or indirectly is simply but efficiently solved and the telephoto served its purpose. Shading through long lenses or put on sun visors are not yet made its appearance. The batteries last for an astonishingly long time!
On the Nex makes the device an inconspicuous impression. It would be desirable mA only an on / off switch - this function is implemented exclusively through the removal or folding in the housing on the hot shoe, so that in the folded state can not be beblitzt.
This flash is - as I understand the manual - for occasional use thought: it is warned against overheating in to intensive use ....
