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Title: Disappointing at best
Review: I just received this lens today and of course did some controlled comparative shooting against my other Canon L lenses and a 24-60 sigma. My control tests were with and without a flash on a tripod and wireless shutter release.I find the images very soft on the ends. From 4.0 to 20, photos were acceptable but not stunning. 5.6 seemed to give the sharpest picture which I find strange.Needless to say, this will be back in the mail tomorrow and just not in the mood to play swap and shop and praying for a descent copy. I can pull any sigma or any other brand off the shelf and get much better results at 1/4 the cost.I rated this 2 stars for excellent color and contrast, although this deserves 1 star.$1000 for this junk? C'mon canon, get real.
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