There have been rumours knocking around that suggest Nikon's great D600 DSLR suffers from excessive sensor dust. This time-lapse goes a long way in proving them true.
I thought I would put this claim to the test by purchasing a brand new D600, putting on a 50mm 1.8D lens, and shooting some test shots, before using the camera for anything else.
And, from that I've seen, dust on the D600 is indeed a serious issue. Right out of the box, after taking the very first picture, I could see several dust spots, but as my time-lapse series progressed, I could see more and more spots appearing on the sensor. Keep in mind that I am not changing lenses; all this dust is coming from inside the camera.