I am constantly amazed at how good this is.
Today I went up in a light aircraft and took some pics. Bad light, but most importantly really turbulent when flying at ~2000ft over some 800ft hills with a 40kt wind flowing over them. I could barely hold the camera in one hand as I was being chucked around.
This is a 1:1 piece of a frame taken with the Pentax 24-70, 70mm zoom, TAV mode, f2.8 1/1000 resulting in ISO 640.
And this isn't just one lucky shot. ALL of about 50 shots taken on that flight are this sharp!