All one has been able to learn to negative assessments of the shutter technique, does not apply here. The glasses Philips 517/00 is pleasantly light, the 3D effects are amazing and almost perfect quality. The high resolution is maintained, only a slight lowering of the brightness values can be observed. The 3D effects remain constant even when the user moves of watching in any desired direction. At this year's IFA I could extensively make comparisons with the polarization technique. Here, too, great results, but I could not avoid the impression me that the images appeared transparent at certain viewing angles. So I stick to it: I keep the shutter technique in this form for nearly perfect. In conjunction with the Ambi-Light is now a completely different television.