Full screen vs. pixel peep
After years of looking for the best resolution, lenses, sensors, tripods...I did a quick sanity check with a simple calculation:
the monitor screens we almost all watch our pictures on have at most 1200 lines which, with the usual aspect ratios (3/2 and 4/3), give us about 2M pixels for full screen pictures. Most of the time there is something else on the screen so we use much less than 2M pixels.
so we admire our own and other people's great pictures downscaled to less than 2M pixels,
unless we pixel peep, i.e look at less than the full picture.
Don't take me wrong, I am proud of a landscape I shot with no shaking which I can peep down to the pixel, and I do panoramas with multiple of these shots.
But, while it is useful to have a more pixels for cropping, enlarging for posters and above, and to be comfortably below the Nyquist sampling limit of the pixels, let us remember that 99.xxx% of the time we look, judge and admire pictures downres'd at less than 2M pixel.