I like Live View for precise focus when using a tripod.
The D600 Live View uses the f/stop selected in the camera. In your case that would have been f/8.
You may wish to use the widest aperture for focus and framing in Live View, then remember to select the aperture you want to use to make the image. (This workflow is similar to using a large format view camera-- focus wide open -> set aperture -> make exposure)
Some previous Nikon bodies used the widest aperture for Live View but that is not the case with the D600. Perhaps a firmware update will change that.