I recently purchased a Nikon D800 and discovered that none of my lenses work in the shutter priority mode. That is, the aperture settings don't respond while in that mode. All the other modes work as they're suppose to.
Is it me or my equipment?
In Shutter Priority mode... you set the shutter speed and the camera sets the aperture based on various factors. What exactly is NOT happening that you think should happen?
Post pictures of your results so we can see what you're doing.