My Sony RX100V seems to have a stuck aperture. As in, it's stuck wide open. I'd researched this before, and someone suggested resetting the camera, and that seemed to work. But it's back again, and a reset and even initializing the camera didn't fix it. In full manual, if I adjust the aperture, it doesn't change the exposure. Oddly, it acts like it's in aperture priority, even though the aperture doesn't ever seem to change. Depth of field never gets any deeper or shallower by changing the aperture ring. The exposure's still the same, regardless. Either the aperture is stuck or the camera is compensating somehow. It could be my unfamiliarity with Sony cameras, this is my first Sony still camera (I'm a Nikon guy). Do any of you have any idea why? Is it a simple operator error, or is this something I need to send my camera in for? Thanks!!!