Two products that have been getting a lot of attention lately are the Sony a7 and a7R full-frame mirrorless cameras. Last month we took an in-depth look at the Alpha 7, and were mostly pleased with how it turned out. Now it's time to take a look at its big brother, the Alpha 7R, which offers a 36 megapixel sensor with no low-pass filter and a more conventional autofocus system. Is the a7R worth the price premium over the a7? Click below to find out.