My Sigma 35 f/1.4 arrived yesterday from Adorama! I spent all of nap/rest time getting it calibrated (quite a process), and I practiced on Kate while she was relatively still this afternoon. These are all at f/1.4 (since I wanted to test the focus wide open). I'm so excited to get a wide angle prime back in my bag! I ended up calibrating at +3, and it's pretty darn sharp.