Well, we already know that the main camera has only twice the megapixel density, so we are back to stitching images to increase the quality. Fortunately nothing

Well, we already know that the main camera has only twice the megapixel density, so we are back to stitching images to increase the quality. Fortunately nothing moves much on mars over the timescales that the camera operates, so its perfectly reasonable to get the quality up that way, just as we have seen with Spirit and (the still working) Opportunity. But as much as we all want to accept that it's not Curiosity's main mission (taking pretty pictures,) it is a very important part of the mission because it's pictures, not data that gets the public's attention, and more importantly, makes future missions to mars a priority for politicians who see a voting public willing to support them.