Zeiss 25mm f/2 Distagon
See the review of the Zeiss 25mm f/2 Distagon in Guide to Zeiss.
I was perusing some material and came across this image; the high contrast and beautiful color rendition of the Zeiss 25mm f/2 Distagon really speaks for itself here, and I remember well the feel of this beautiful autumn day. See the full aperture series.
It reminded me of one point: one can always find the weakness in just about any lens (including in this scene if one looks), but it is the overall character of the lens that comes through first and foremost. Here, high overall contrast and high micro contrast and a high level of color correction come together.