No. It works whether there is dust or not. However, it's kind of fussy about the background you focus against. It has to be neutral and uniform. Paul On May 17, 2008, at 4:29 PM, William Robb wrote:
> Hi, I've been playing with the dust alert function on my K20, and > have a question that hopefully > someone here can answer. > I am following the instructions in the manual regarding lens type, > etc, but can rarely activate > the dust alert. > Usually it is greyed out and unavailable. > Does it only become available if there is dust on the sensor? > > Thanks > > William Robb > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above > and follow the directions. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
