Being new to the digital Interchangeable Lens world, the idea of sensor cleaning has been on my mind. It became bigger recently when I realized there were blobs in the sky that seemed to be following me around. Dust on film is no big deal, because you advance the film and it goes away; the problem is usually only there for one frame. Dust on my old digital camera was not a major problem because the entire camera was sealed. But of course if it was a problem, there wouldn't have been anything I could do about it because I couldn't take the lesn offf anyway.
So conventional wisdom is to stop down your lens and point your camera at a clear blue sky to show all the junk on the sensor. I did. It did. Yuck.
I now have a RocketFish blower and all the junk is gone...for now. I know that eventually there will be stuff I can't get rid of with a little air and more agressive action will be required. But until then, I'm happy.
Tom