My 60d has begun to randomly display extreme oof issues.

[Purestar7]

60d

[Skirball]

Can you give us some more information?

[Purestar7]

Ok , so basically it is very random, happens with all lenses, aperatures, SS. It looks like extreme motion blur, as if I'm trying to shoot a picture with no IS at a low SS while walking. There have also been a couple of shots where the picture is 2/3 cut off by a broad white border on two sides ( bottom & left) I bought the camera in 2011 so my year is up ( warranty) I'm hoping my local camera repair guy can fix it, does anyone have an idea of what could be going on with it?

[hsbn]

What lens are you using it with? are you taking photo on tripod with IS on?

[Purestar7]

Tamron 70-300mm f/3.5- 5.6 vc sp: is on shutter speed 250-800, hand held. Canon 200mm f/2.8 L SS 1000 hand held _HH(no is) canon 18-135 mm kit is,HH, SS 260-800.
Please Understand, this is happening intermittently. I have been using this camera since June 2011 and have many beautiful shots in fine focus using my methods. I took some college photography courses back when I had no IS and use good technique. I can take 15 good pics, then without changing any of the specs, and its not windy, everything in the image is out of focus. I check the cameras settings try again same thing. Turn off camera sometimes it begins working properly again. Most of the times it's happened recently is when I first turn on the camera.

I'm wondering if there's a connection to the focus function in the camera and a movable mirror which could become stuck or unhinged.