Take a look at the Kodim 3 example image, either the '500px' version or the '1500px' (but not the '1500px' version). Zoom in (400%) on the cap of the yellow ha

Take a look at the Kodim 3 example image, either the '500px' version or the '1500px' (but not the '1500px' version). Zoom in (400%) on the cap of the yellow hat. The lines of the cap are muddied under all lossy compressed formats, but surprisingly, plain old cjpeg does so less than the others. Generally though I find the new formats look better than JPEG.