« on: December 09, 2013, 09:38:05 AM »
I've found that my 100mm f/2.8L Macro IS seems to hunt for focus a bit more in low light than other f/2.8 lenses. It does a very nice job as a portrait lens, outstanding bokeh...!
My 100L is the only lens that I have owned that I have had to really be conscious of using the focus limiter properly. A macro lens just has so much more a range of focus to run through, and if you miss focus using it as a medium tele and it starts to run through the whole macro range, things can get VERY slow.
But you are right: it is a beautiful portrait lens. In certain settings I actually reach for it over my 135L.