I took my 70D and Tamron lens to the camera store where I purchased them. We put a new lens on my camera and problem occurred. Then, we put
my lens on a new camera and it happened again. Now we don't know which is the problem. Possibly one corrupted the other.

I have a new Canon 70D with the newest Tamron 18-270 zoom lens. Works great for photos. With video, filming stops spontaneously and a screen message pops up saying "no lens is attached". Anyone else having this problem? Anyone know if Canon or Tamron is addressing this problem?