It is, after all, a new format -- Micro Four-Thirds. It couples a DSLR-sized sensor from a Four Thirds System camera (such as an Olympus or Panasonic) with a new breed of lenses that are about half the size of a conventional DSLR's. At the same time, instead of a prism viewfinder and mirror-box mechanism, there is an EVF. Grainy, shaky, slow to respond? That was yesterday's EVF. The viewfinder and camera-back LCD on the G1 are amazingly crisp and accurate. And the EVF even lets you do things you can't with an optical viewfinder. For instance, you can set it to zoom in on your subject while you focus manually.