Toying with the Nikon 50mm f1.4 lens and an extension ring on the D600. Very narrow dof indeed. Often a bit too narrow to be honest. That is why I used f5.6 shooting the last two images.

Without extension ring:

D600_20170506_0646 copy.jpg

All others with extension ring inserted:

D600_20170506_0650 copy.jpg
D600_20170506_0652 copy.jpg
D600_20170506_0653 copy.jpg

f5.6

D600_20170506_0662 copy.jpg

f5.6

D600_20170506_0665 copy.jpg