Borris.  Borris is the name of our marshmellow cat.  I found him sitting on the deck railing with the setting sun behind him.  A perfect opportunity to test the APO corrections to the Leica-M 75mm ASPH APO lens.  I think the test is passed.  See for yourself.

backlit cat at f/2.8 ISO 320 with a Leica M9-P

I also included a pixel zoom of the image in Adobe Lightroom 4.4.

adobe lightroom 1:1 view of backlit detail