Mark Roberts mused: > > He rationalized away the difference between > his Nikon D1x and the Canon 1Ds by noting (correctly) that a doubling of > pixels yields only a 25% increase in linear resolution.
Not really what I'd describe as 'correctly'. A doubling of pixels leads to a 40% increase in linear resolution. (Or, if it's anisotropic, if it's 25% on one axis it's going to be 60% on the other axis. When will Nikon stick with square pixels?) Other factors (such as changing sensor size) also have some effects on the required resolution, but that's independent of pixel count.
