Just look in a manual (Samsung LE23R51B & 41B). The 51B has 1366x768 pixels and the pixel pitch is 0.015(H) x 0.015(V) inch The 41B has 1280x720 pixels and the pixel pitch is 0.005(H) x 0.016(V) inch The pixel pitch is so much different from each other. I can't explain this. Both screens are 23 inch. Only the resolution is a *little bit* different. How is it possible that this pixel pitch is so much different? The 51B has a triple horizontal pitch. BTW: do I understand the word pitch good? Is it the distance (heart to heart) between the pixels? Can anyone clear this up?