Tim Øsleby wrote:
When using the DOF preview button at my Ds I hear a the same sound as usual,
the only thing happening is the regular sound, the image in the viewer
doesn’t change.
If you're not using the lens in the A mode you must put the camera
manual Manual mode, in any other mode the DS works always with the lens
wide open.
You can also take the lens off the camera, if you don't push the
aperture lever the diaphragm should close to the position indicated by
the aperture ring. If you push the lever it should open wide but as soon
as you release the lever it should close again.