When in manual mode, hit the %26quot;up%26quot; button on your control circle. This will allow you to change shutter speed and aperture. Two blue boxes will appear in the upper-right hand corner of the screen, one will display aperture numbers (2.8 - 8.0) and the other will display shutter speed. You can alter the shutter speed using the left and right buttons on your control circle.
Hope this helps, I have an sp-510uz but I don't have it with me right now. Let me know if you need anything else.
