As promised, we've updated the TX-P42ST50 review with the world first in-depth analysis of the 3D mode - including details on Greyscale and colour calibration, as well as resolution.
Because we also found that the pre-calibrated Greyscale from the panel in 3D was quite blue-tinted - even in the True Cinema and "Warm" colour temperature modes - we mentioned in the review that we'd post our calibrated 3D settings. Of course, it won't be as good as a full 3D calibration, but very few calibrators are carrying these out:
On the UK model, there are no numbers in the menu for the basic settings (someone at Panasonic UK apparently has a case of numerophobia!) so we've had to go in "numbers of remote clicks" for those:
HDTVtest.co.uk 3D Calibration Settings for Panasonic TX-P42ST50
Viewing Mode: True Cinema
Contrast: set to FULL and then reduce by 8 clicks
Brightness: set to ZERO and then increase by 30 clicks
Colour: set to ZERO and then increase by 24 clicks
Vivid Colour: Off
White Balance: -12 3 4 16 7 -25
Colour Management: -11 -5 0 14 1 0 6 0 0
Intelligent Frame Creation: Off
3D Refresh Rate: Auto (see the notes in our review regarding this for bright rooms)
16:9 Overscan: Off
Pixel Orbiter: Auto
Remember this won't be as good for your individual TV and glasses as a real 3D calibration would, but if you can't find anyone to do this, it's the next best thing.