So I'm trying to experiment with DoF on my S5IS. I'm attempting to keep the subject in focus while throwing the background out of focus. I've been shooting at f/2.7, no zoom at all with my subject anywhere from one foot to five feet from the lens and the background anywhere from six to twenty feet from the subject. So far everything - and I mean everything - is coming out sharp.
I know it's possible to get shot with shallow DoF on this camera as I did it once before (totally by accident). Could there be something wrong with the camera? Could it be displaying f/2.7 but actually shooting at f/4.0?

