The Df seems to be back-focusing.
In RAW, the easiest way to see it is by looking at the text in the center “As with you, also with us”. With the other 16 mp APS-C cameras like the X-Pro1, X-M1, K-500, the Canon 700D, and m43 cameras like the GM1 and GX7, even the Nikon 1 J3, that same text is rendered in sharp focus.
Only the text from the mis-focused EM-1 RAW files is softer (note: switch EM-1 from ISO 100 to ISO 800, to see the text properly focused with the EM-1).
I know that DPR works hard on these Df studio samples, but something is up with the focus accuracy.
Started out doing photography at the age of 6 using an uncle's old 1940 kodak brownie box camera. At 15 years of age, I decided to buy my very own 1975 Praktica SLR camera. I now shoot with a Nikon D850. I do unpaid TFP and commercial paid work.