This was a long time coming, thanks in part to the disruption of the PMA show, and in part to the amount of effort required to make intelligent comparisons between 6 different lenses. The work's finally finished though, and you can see the results over on SLRgear.com
To access the test results directly, here's a list of links to the reviews of all six lenses in the roundup:
These very detailed comparisons are quite a lot of work, so we'd like your feedback on what you like, what you'd like added, what you'd like deleted, or any other feedback you might have that'd help make our lens reviews or the site as a whole more useful to you. I've created an SLRgear forum thread where you can leave your comments; they'd be much appreciated!
On other fronts, we're working on reviews of the Nikon 14mm f/2.8 and Canon 70-200mm f/4L IS lenses. The raw test results are already posted for these, look for our detailed analysis sometime within the next week or so. -- Dave E.
50mm Shootout Complete on SLRgear.com