Share your experience!
After update to JB4.3 my xperia SP tooks blurry images .
It was very difficult to have sharp focus on the objects...... image looks blurry
Update again.
It seems original file lost during update.
Or the camera is broken during update. You can try to download Xperia Diagnostics from Google Play, and run tests on the camera.
Another possible reason is that there is a bug in your new system.