In these examples rendering quattro is better than merrill.
Photos quattro are more nuances, finer detail, more depth (3D) with better bokeh, while being more realistic (according to the author photos).
For example the first 4 pictures in the photo with sunlight, further details which are more numerous and purposes, quattro, although it is not super easy either, the big difference is mainly terms of color and relief.
Quattro reveals more shades than merrill. Trees, including those in the background and the background are much more relief. It is noticeable by the fact that their enlightened sides ressortes for more than merrill, have felt much more volumes, are those of merrill side dishes.
Photo overcast, the differences are still more marked.
The wealth of colors, especially in the green even more in favor of the relative quattro merrill.
Trees quattro version have better modeled, their volumes are much better made (the merrill they appear side dishes). Whether those in the foreground and the background of those background.
The whole image quattro has a lot more depth, relief.
The bottom and the front plane, are hardly differentiated on the merrill release. No depth, unlike the quattro versions.