Thanks for your feedback. I hope you are right.... because I don't see that I have an alternative. I am too deep into Canon and I can't justify a FF as a hobbyist. I will wait to see the 60D reviews, for sure, but I may have to just bite the bullet and buy it, hanging onto my 40D as a backup 2nd body.lol said:Skimming through the clarkvision link, the author of that suggests 5 micron pixel spacing (I work that out to be around 13MP for crop sensor) is his optimum preference on the basis of a diffraction limited f/8 lens. If you pick a lower aperture as limit, then it would shift the peaks in the chart to smaller pixel pitch. Yes, it does mean if you use higher aperture values you wont get the maximum resolution possible from the sensor, but you wont get any less than if you had a low resolution sensor either. See also my earlier link where I did a practical example of diffraction effects. You don't need to fear the onset of diffraction softening. The author also appears to be targeting optimal pixel sharpness. That's a common failing of the low MP fan group who fail to see the bigger picture.
In practice, I'm often shooting in poor light and the Canon 7D is the best >1.5x crop sensor camera I have ever used particularly at high ISO, and it also beats two bigger sensor cameras I've owned too.