Nikon made the first public showing of the new D7100 at the 2013 BVE Show in UK. Several interesting points were mentioned. First, there is no anti-alising filter on the 24 megapixel sensor. Part of the choice for this was because due to the high resolution: the sensor resolves such fine detail that the risk of visible Moire is reduced. On a similar point, the lens choice for optimum sharpness with such high resolution is more important than ever, “there is no substitute for good glass.” The improved EXPEED processor also provides Moire correction.
The D7100 hosts a more advanced 51-point AF system. In Live View, contrast detection is implemented over the entire frame. The contrast detect auto focus in Live View has been optimized for speed and reduced hunting compared to earlier video auto focus integration. The LCD display uses RGBW pixel configuration to provides increased brightness and improves viewing outdoors and in bright light. Finally, the ability to control the aperture in Live View must currently be selected before recording begins. Nikon is “working on” a fix for this and is waiting for Nikon Japan who has the task of allowing this via a firmware update. Finally, weather sealing on the D7100 is at the same level as the D800.