I'm working in PS CS3, I shoot in Leaf 11.2 and process my files in Camera Raw 4.6. I've mostly be unhappy with the color differences between PS and Leaf. The adobe standard profile brings me close, but not enough.
I've attempted to shoot a color checker and use the DNG Profile Editor, but the profile created seems overly saturated, and gets me further from my goal of matching what I see in Leaf. Where am I going wrong? I imagined Profile Editor would be much more precise.
The short answer is the Leaf rendering is not "accurate" (a.k.a. "precise") by design. It is designed to look good, which is different. Attempting to build a very accurate profile using the chart feature of the profile editor will build a profile that is closer to being accurate, which is wrong direction if you are trying to match the Leaf rendering.
Start with the Adobe Standard profile and apply manual edits from there to move it closer to the Leaf rendering.