How does the image quality of the EOS-1D compare to that of the EOS D30 ?
A. At any given ISO setting, the image quality of the EOS-1D is comparable or superior to that of the EOS D30. This is due in part to the larger individual pixel size of the EOS-1D (11.5 x 11.5 microns vs. 10.5 x 10.5 microns for the D30), but also because of improvements in noise reduction technology and signal processing algorithms which Canon achieved during and after the development of the EOS D30. Additionally, the EOS-1D offers far more image quality adjustments than the EOS D30, in areas such as color space selection, white balance options, custom tone curves, and of course higher resolution among others.