>The pixel density of the D700 is substantially less than that >of the D300. Essentially, the pixel density of the D700 is >5000 as compared to the D300. For a comparable >pixel density, the D700 should have near 20MP resolution since >its sensor is nearly 3x the size of the D300. >
It's a good thing that the D700 does not have the same pixel density of the D300, or--everything else being equal--we would logically have more noise at any given ISO...and lower quality, especially at higher ISOs, no?
Imagine dealing with a 20MP image with more noise and poorer quality. No thank you.
Heck, why not advocate a 10-12 MP sensor from a point-and-shoot? Those are even more dense, no? Those sensors are far tinier, deliver more noise, poorer quality, and have even more limited high ISO choices, correct?