There has been a debate in DPReview (and some discussion here) about whether downsampling an image taken with a high pixel density camera can effectively eliminate the noise inherent in such images, restoring the benefits of low pixel density. Those who say that downsizing won't work as well as shooting with a low pixel-density camera in the first place argue that because the noise created by high-pixel density is not independently distributed through the image, downsampling won't work very well; those who disagree say that while this may be true for downsampling a jpeg image, if one shoot RAW downsampling works just fine. The argument here seems to focus on digital artifacts (grainy images, e.g.) but I have questions about the ability of downsampling to achieve other benefits of low pixel-density: - First, I have understood that because low pixel density permits larger photosites, dynamic range is greater in a low-pixel density camera, and that it is these larger photosites (not sensor size) that contributes to the advantage in dynamic range. If this is right, downsampling from a high-density, small photosite camera is not going to help on dynamic range, right? - Second, there seems to be superior tonal qualities associated with low pixel density cameras (noticed across the range from MF digital images that look like LF film to the better colors from older, lower mp point-and-shoots compared to the newer, higher mp version). My understanding is that this is a product of lower noise, not the kind that produces grain-like defects in an image, but the kind that detracts from the purity of a hue. Can this sort of noise be corrected by downsampling? I wouldn't think so, but I am curious. Thanks in advance.