yes under normal conditions F5-F11 it showed minimal dust, however, shortly Ill be doing a shoot for a local Falconry club and most of that will deal with blue skies, small apertures, and I simply despise sensor dust.
If dust becomes and issue for you send me a PM. Ill take care of you.
~OR~
If you are steady handed and willing to do it yourself you can get a kit that is wonderful and fairly reasonable.
http://www.visibledust.com/products3.php?pid=611#