Interpolation—a valiant effort
It turns out that the interpolation artifacts discussed in the March 27 entry are actually a valiant interpretation, given the limits of Bayer technology—the vertical stripes actually are present in the scene! The actual-pixels crop below is using the Leica 180/2.8 APO Elmarit-R, an extraordinary lens (I use it with an adapter on EOS).
Canon EOS 1Ds Mark III + Leica 180/2.8 API, actual pixels