It is a confusing subject which is not made any easier by some apps. No matter what they say just remember you can't have DPI util you print. Think of DPI as Drops (of ink) per inch.
EB
EOS 1D, EOS 1D MK IIn, EOS 1D MK III, EOS 1Ds MK III, EOS 1D MK IV and EOS 1DX and many lenses.
