How To Test a Colour USB UVC Camera for Repeatable Inspection Two packets come down a conveyor. The first carries a label in the intended shade of blue. The other came from a batch printed in a slightly different shade. On a still image, the difference is easy to spot. https://updatescoop-fresh999.theblogfairy.com/42491605/how-much-is-it-worth-for-uvc-camera