Now you can see what you're shooting.
When you frame a shot, you want to see what the camera sees. Unfortunately, the optical viewfinders of most APS-class cameras can't give you a visual preview of how the exposure will look, can't preview color reproduction and can't show you in advance how the camera will handle severe highlight or backlight shots. And many optical finders can't even show you the entire image frame!
Because the DSC-R1 incorporates a unique, APS-C class sensor that operates whenever the camera is on, the R1 can deliver continuous electronic Live Preview of the scene. So you really do see what the camera sees.