This exposure meter Sekonic L-208 meets the requirements placed on it. It measures the brightness and leaves after previous ISO setting to draw conclusions about Aperture in connection with the exposure time. The functioning properly and safely. That the packaging is contained no instruction manual to get over because the device quasi explains itself. The casing of the meter is made entirely of plastic and looks trustworthy at first glance less but since this is an instrument, it should be handled accordingly. Who wants more must invest significantly more elsewhere, but otherwise has no advantage. For me the device in the execution is in order since it only runs when eg manual Walimex optics are attached to my SLT A77.