I could not calibrate this gun well. It kept om boucing around on my screen. This could be of:
1) my TV is 100hz. I can not find anywhere if this gun can handle 100hz TV.
2) my TV is HDTV. I can not find anywhere if this gun can handle HDTV.
3) my TV is digital. I can not find anywhere if this gun can handle digital output.
But most probably,
4)My TV adjusts its light depending on how bright the light surrounding the TV is. And in the fine print of the manual I have found that problems occur with this type of TV...
Nevertheless if this one works on your TV be happy very happy, because it is a briljant gun...
BTW, if this gun worked properly on my TV I would have given it the 5 stars for sure!