Until the "pro" reviews start coming, we'll make due with some user reviews. This one is acompanied by an endless stream of photos, both off the camera and by the camera: 2. The shutter is so quiet, never had any camera which has a quieter shutter sound. 3. The shutter lag is so short, almost non exist, makes the camera even responsive. 4. 100% viewfinder makes composition much easier, what you see is what you get! 5. AF speed is quite a bit improved both under good light and low light, and the improvement for non-SDM lenses is even more obvious than SDM ones. 6. AF accuracy is improved too, especially under tungsten light. 7. Auto White Balance is improved, especially indoor under complicated light condition. 8. Shake reduction is even more effective. Link