Originally posted by Ketsuppi11 I guess no one. I have heard about some cases when they have written done what camera equipment you have when you enter the country and when you leave they check that you don't have any new gear.
I don't quite understand this... My question was about flying from Canada to New York and back to Canada..
If you don't register your camera gear and lenses with Canada Customs before you go to the US, then Canada Customs can assume that your gear is newly purchased, if they find it, and if you don't have a registration card with you on your return. You can lose your camera at customs, and any other stuff that you are carrying. If you are driving your own car with the camera in it, they can take the car too.
The burden of proof is on you, not them. They won't hassle you for minor purchases, but they will crucify you for merchandise worth hundreds.
If you stay in the US for a long time, something like 10 days, you are allowed an exemption which would just about cover the Kx. You can check it out by Googling Canada Customs. I almost did that after spending two weeks in Florida. Otherwise be very careful.