Both Sony's future Alpha camera and by extension the rumored Nikon D400 could use a dramatically improved crop frame sensor whose resolution would enter medium format territory. Sony DSLR trainer Michael Bubolo said he had heard "rumors" the APS-C sensor on the Sony camerawould jump to 25 megapixels. While this detail wasn't as definite, Bubolo told Amateur Photographer it was certain the camera would use a new sensor, as its ISO light sensitivity would range into the "hundreds of thousands," a category previously occupied only by high-end, full frame cameras like t