This is a quick test in response to an inquiry into creating short depth of field shots with the SR12. With the camera set to portrait mode you will open the aperture very wide creating a shallow area in focus. It is hard to tell the exact plane of focus on the viewfinder or LCD screen; the plane of focus can be hard to get exactly right (at least in my practice). For this reason I recommend using a measuring tape (a metric tape) to dial in the exact focus.
The neutral density filters will further increase the aperture. You can shorten the DoF even further by moving the camera back and zooming in as the lens lengthens it will make the depth of field more shallow.
This is not meant as a replacement for a 35mm adapter; but as you can see it is possible to get shallow DoF using a couple of cheap filters and the camera presets.