Camera problems

[Barry65]

I have had problems with 70D and 90D. A black streak goes across the image making the camera unusable. What am I doing wrong?

[kvbarkley]

Post a picture, but it appears you have a broken shutter.

[Barry65]

[MikeSowsun]

That does look like a failing shutter. Are you saying that both your 70D and 90D have the same problem?

[Barry65]

I have had 2 70D cameras and one 90D camera with the same problem. Just trying to see if I'm doing something wrong. the problem has happened while I was using a Canon 70-200m lens.

[MikeSowsun]

It seems highly unlikely that all 3 of your cameras have a failing shutter.

I would suspect a lens problem in your case. You may have an aperture blade failing on the lens. Does the problem only happen with that one lens?

[Barry65]

The lens has worked fine on other cameras. Can the lens cause a problem with the camera?

[jrhoffman75]

---

@Barry65 wrote:

The lens has worked fine on other cameras. Can the lens cause a problem with the camera?

---

Worked fine on other cameras at the same time as the three cameras you mentioned have a problem, or worked fine at other times?

[Barry65]

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 used the lens on the next Canon I bought and it worked until the same problem happened. And then again with the 90D which failed last night.

[Barry65]

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