This feature enables fine-tuning of the focus in macro, composition selection when shooting, and exposureadjustment all without looking away from subjects.
Otherwise, it's aimed more at the casual carry-around crowd with a 40 percent smaller body, touch-screen focus selection, control ring exposureadjustment, a 3-inch 920k dot TFT LCD, art filters (in the smartphone app), image (or film) stabilization and 1080P 30 fps HD video.
We really appreciated all the manual controls on the RX1 -- from the aperture ring to the exposure compensation and shutter adjustment dials -- as they allowed for speedy adjustments on the fly and kept menu fatigue to a minimum.