Sounds easy to "calibrate through the glasses" but... I have a new Sammy 3D plasma that came with two pairs of "active shutter glasses". Normally I'd find some way to attach the probe to one of the lenses, slap it up to the display, and give it a go. BUT the new glasses have a little removable tag that is blue on the left, red on the right suggesting that the filter for the two lenses is different. If so, which lens would you choose to calibrate through? I'm not sure the lenses are actually tinted differently, but it becomes significantly more difficult if you need to position the probe so that it reads through BOTH lenses. Maybe if I get some dead time I'll do a quick GS read through the right and the left lens and see if they're any different. Has anybody compared read through both sides of the active glasses?