On my 70D the main dial suddenly does not adjust the shutter speed. In all advanced modes the mail dial only adjusts the focus area. I did a default reset and the problem remains.
For me, it was a simple fix eventually. The Lock lever had been accidentally pushed and it did exactly what it is supposed to do. Everything went back to normal when I unlocked the camera.
Actually, it started again with the same problem and yes, in Av mode, rotating the main dial just scrolls through AF choices. I did discover that if live view is activated then the main wheel changes the shutter speed if in Tv mode and aperture in A...
Thank you for responding. I think I pushed that button by mistake then immediately wanted to change the shutter speed. It didnt occur to me it would be as simple as pushing that button again. It's all good now. Thanks again.
