Does the NEX lineup need another model? Sony reckons it does. Meet the NEX-6. The company's latest mirrorless camera looks nearly identical to last year's top-of-the-line NEX-7, with the exception of a new dedicated mode dial, that lets you switch between aperture- and shutter-priority, manual, or scene modes with a hardware control rather than a need to jump into the menu. It offers the same pop-up flash (with a bit more power), a 3-inch 921k-dot TruBlack tilting LCD, an identical 2,359k-dot OLED electronic viewfinder and a strikingly familiar design. And that's where the similar