Great, in theory.
I was psyched I found this app when I spent a week in Japan, thinking this would help me in a big way. Wrong! Out of 10 tries using photos of clear commercially printed Japanese signs, fliers, or menus the resulting translations were all as meaningless as the Japanese version. Random English words strung together with a few Japanese characters sprinkled in.
JSiver about
Babelshot: Translate Instantly Using Phone Camera, v1.5