So far I have been very happy with my 1ds Mkiii, until yesterday. I have this catalogue shooting for shirts, so I did a quick test yesterday, to find out huge mire patterns on some shirts, visible at any zoom percentage! Have you had any similar problems? Is there any way to make it go away without hours of retouching?
Thanks for any advice,
If possible, you might try shooting with a softer lens or stopping down more to have some diffraction blur.