Anyone using this lens for portraits? Ever since selling my 105 F2 DC and 85 1.4 several years ago, I’ve been thinking about a new portrait lens instead of using my zooms. The Sigma 150mm seems to have very little CA, good bokeh, great sharpness. The 150mm is a bit long, but I’m pretty intolerant of CA and my old 85 and 105 exhibited it and a recent new sample of the 105 I tested from a local dealer had it as well – even with the D3 processing. Any thoughts or alternatives?