 A technique to quantify the level of crosstalk from a 3D display involves measuring the percentage of light that deviates from one view to the other.The crosstalk in a typical parallax-barrier-based 3D system at the best eye position might be 3%.Results of subjective tests  carried out to determine the image quality of 3D images conclude that for high-quality 3D, crosstalk should be 'no greater than around 1 to 2%'.