I would like to know if people actually has any idea of what means resolution!?
I have read lot of times "no more Mpx, I don't need them" And some people saying (LOL) 24Mpx or so... is quite enought!
I would like to ask you: How many pixels has a 40D? ...about ten, isn't it? and to double the resolution (that everybody knows is not good enough for pro-work) of this camera how many Mpx do you have to have?...
FORTY Mpx my dear!!!
In fact the 5D-2 machine has only one & a half the resolution of the 40 D.
In an optical sistem the resolution determines how can be dintiguished two diferent closest points turning one single point into two, for exmp. with a telescope watching the sky. The resolution is being given in arc seconds, and can be calculated dividing the number 10,5 by the aperture of telescope (in cm). this is the linear resolution for astronomical use... (and it has the name of Dawes Limit)
In a bitmap you have two dimensions height and widht, then if you double widht resolution you need to double the height res too! 1 pixel turns into 4 !!
Then are you sure, photographers do not need higher res in there machines? LOL.
Why then medium format sistems use 40 to 60Mpx in there backs and larger format cameras even 1Gb in a single shot!
Amateurs please; go to TOYSRUS, to ask for your dreams.