Resolution and Noise of K-7 vs. K20D
Both cameras have the same resolution of 14.6 MPixels and therefore, noise and resolution can be compared in 100% crops.
The K-7 was a pre-production unit with firmware 1.00 tailored for production units. The K20D was firmware 1.00 as well.
The first 8 images focus on the noise test, the rest of the series on resolution. All direct resolution images are ISO 100. All synthetic resolution images are effective ISO 50.