Turns out I missed a photo when I cleaned the A7r stuff off my iPad. So here it is, taken a week ago yesterday as part of a series to show friends & relatives what a lovely winter we're having. It had just started raining, after snowing 3" the previous evening, when I clicked the shutter. The Pentax 31mm is at f/8, camera at ISO 100, handheld. I've attached first a downsample of the full frame, then full-res crops from the top left & right corners. Note that I framed it at 16:9, as with all my A7r pics, but since Sony doesn't crop the RAWs I've used the whole thing here. RAW conversion via PhotoRAW, slight levels tweak & USM via Photogene. You'll see a bit of lateral CA in the crops if you look closely, easily dialed out if desired in post.
-Dave-