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Message: <blockquote data-quote="Horoscope Fish" data-source="post: 367114" data-attributes="member: 13090">I test every new lens I get right out of the box and one of those tests means taking the same exact shot five times with each shot using a different (single) focus-point. Nothing tricky here, I shoot these tests in full daylight, using aperture priority and typical settings like f/5.6 at 1/250 using ISO100 or what have you... Each shot uses a single focus-point in each of the four corners and the fifth shot uses the center focus-point. With both of the Sigma 30mm lense's as soon I tried using *any* focus-point other than the center focus-point the shots were horribly blurry. I don't mean the shots looked "soft" I mean they were shockingly bad. The AF wasn't "hunting" either I was getting focus-lock very quickly each time. Again, these were easy shots being done in full daylight. The results were consistent and repeatable though the second copy was significantly better than the first. I was convinced within a couple hours there was something wrong but I gave them a couple days of testing before sending them back. I absolutely suggest you give one of these lenses a shot; I'm convinced I just got a pair of bad copies and a good one would be a wonderful thing. I really can't tell you how badly I wanted one of mine to work out because I really liked everything about it. If you can get even ONE day of serious shooting time to really test the lens, you'll know if it's a good one or not and you owe it to yourself to find out. Here's hoping your experience is better than mine!...</blockquote>

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