Backside illumination may sound like something a proctologist would use in a poorly-lit examining room, but it's actually a re-imagining of the CMOS sensor that brings the photodiodes closer to the action, thus delivering brighter images from smaller packaging. OmniVision and Sony both have their takes on the tech and now Toshiba is putting it into a 14.6 megapixel sensor for cellphones and compact cameras. The comp
