Sony a7R II includes full frame 42MP sensor, lauches in August

Camera makers have been busy introducing new models today, and among them is Sony, which has already taken the wraps off a couple models. Newest among it all is the maker's Sony Alpha 7R II, a mirrorless offering featuring a full-frame BSI CMOS sensor and a 42.4 megapixel resolution. Says Sony, this is the first ever back-illuminated Exmor R full-frame …