The Davis Family Library on the Middlebury College campus at sunset.
My first, lasting experience with mirrorless cameras was with the Sigma DP-1 compact. It was only 16 megapixels, but because it directly sampled the colors from a scene on its multilayered sensor (instead of interpolating the colors through a Bayer filter) the images it produced were unbelievably sharp and detailed.
Unfortunately, the proprietary image format meant you had to use specialized software to edit the images and the multilayered sensor required good light to produce images with an acceptable amount of noise.
Still, it was a worthwhile camera that produced a great deal of my favorite images, including a majority of portraits from my Apple Pickers