When judging the camera (both cameras) picture quality, please remember that the prototype devices had probably a few picture quality worsening factors.
At least on my prototype, the front camera display glass aperture was covered with clear double sided tape and also with clear plastic strip between the camera and the display glass. Obviously the adhesive on the double sided tape blurs the image in this case.
And also on my prototype, there was no cover lens on the rear camera. How much this affects the picture quality, I don't know but potentially the dispersion of light is different without the cover lens and therefore the picture quality may be affected.
As my prototype became nonfunctional after just a day, I have no real experience about the picture quality with the V's cameras. Just my two cents...