Light Meter is a free app which emulates a traditional light meter, and it does so quite well. It has a display similar to that of the LCD of a modern electronic light meter and allows you to lock either the shutter speed (Tv) or aperture value (Av). Both “+” and “-” keys and a slider are provided to adjust the shutter speed in full stops, the aperture value in half stops, and the ISO in third stops. It’s also possible to set an exposure compensation value in third stops.
The interface is certainly easy to use, but how accurate the meter is remains to be seen through further testing. Also, there is no means of attaching the meter to the camera’s hot shoe as there is in the case of the Gossen DigiSix. But certainly in a pinch, it’s handy to have.
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