Having just upgraded from the 5D to the 1Ds lll there seems to be a particle well three in fact on the llls sensor, not the normal dust specks these are handled ok with the in camera cleaning system.
Perhaps if I describe them someone might know what they are, they are in the same position so its not on any of my lenses. Best described as a black circle with a pure white dot in the middle and pin sharp unlike dust which are blurred these are sharp !!!!!!!. Needless to say it's been shipped back to Canon at a considerable exspence £22.0 in our money and $45 in dollars.
Any suggestions please.