These two from the 24-70, straight from the camera.
The dog looks really good on the ISO 16000 one, but the background is a little iffy. However, it is the in-focus subject that matters more. Impressive.
5DS R, 1D X, 7D, Sigma 10-20mm f/4-5.6, 24mm f/1.4L II, 16-35mm f/4L IS, 24-105mm f/4L, 50mm f/1.8, 100mm Macro f/2.8L, 70-200mm f/2.8L IS II, 100-400mm f/4.5-5.6L, 580EX-II flickr