"In-camera JPEGs are another matter, and in this category it's a solid win for the D4 over the D3S. JPEGs that emerge directly from the D4 have a slightly crisper look as well as more natural colour in shadow areas, throughout the standard ISO range. At moderately-high ISO settings the D4's JPEG advantage is more pronounced, thanks to revised noise reduction and other processing that doesn't smudge image detail or desaturate dark colours and shadows. In fact, the D4 creates the finest in-camera JPEGs I've ever seen when set to about ISO 1600-6400 (with High ISO Noise Reduction on Normal and Sharpening, within the Neutral Picture Control, on 3). The D3S can crank out good-quality JPEGs, but the D4's are better."