Canon Community

I no longer have the two earlier 70D cameras that had problems. The 90D started having problems last night. I have a used 70D backup which is working fine right now. I just want to figure out if I'm doing something to cause this.

Using my Sigma 17-50 mm lens, I still have a problem with a horizontal white bar and a diagonal black bar at right.

With having 3 Canon cameras have a similar problem, I am just trying to see if I'm doing something wrong.

I have a remaining 70D and the 70-200 lens is working on that camera. Could the lens cause damage to the camera?

I have used the Canon 70-200 lens for 5 and a half years on three different Canon cameras: 2 70 D's and one 90D. My problems with all three cameras happened when I was using that lens. In other words, after I couldn't use one Canon camera anymore, I ...