It has a lense cover(manual), and the ports for cables has a cover. There is one viewing window on top left that draws some dust, though. Except that, I did not see any other problem with dust. Not sure this addresses your question or not.
not sure where you are going with that, but I suppose if you were in a dust storm, in the deserts than I would say its not. I keep my lens cap
on and camera in the case when I'm not using it. Dust was never any concern of mine.
answered on May 2, 2013
I'm not sure if it is or isn't. Generally, I take great pains to avoid getting dust and dirt on any part of my camera. Otherwise, I would suggest you get a good camera cleaning kit or avoid using your camera in dusty, dirty areas.
I carry the camera on job sites almost daily and have not experienced problems with dust inhibiting the function of the camera but I can se it having issues on the extension and retracttion of the lens if there was a lot of dust buildup. I clean mine daily before putting it back in the case with a quick blast of compressed air..