I want to be able to manually adjust aperture and shutter speed, but leave ISO being set automatically. How can I do this on my Canon 7D?
Hoping I haven't misunderstood your question, it is as simple as this:
- Turn Dial on top left of Camera to “M”
- Press the “Q” button on the back of the camera
- Set ISO to auto
- Turn Dial on top left of Camera to "M"
- Press the ISO Button on top of Camera and turn the top dial to the left until you reach "A"
now you are free to set the aperture and shutter speed as you please, using the top dial for shutter speed and rear dial for aperture (unless you've changed things with custom functions).