Michael Axel , Dec 12, 2006; 03:39 p.m.
John, I use the f/1.8 version and love it. It is a great performer. I've also used a non-AF version of the f/1.4. I think people get too entrenched in legend and fail to sort out fact, but the f/1.4 is a great performer as well. If there's a "negate" element in the comparison, it's that there is not a full f-stop difference between f/1.4 and f/1.8. Plus the f/1.4 is about 3 times more money. If you need the speed, the f/1.4 is a great lens too, and the only time it ever looks soft is at full aperture.