Buying this unit Basically nothing. It was soft on the left and autofocus was inconsistent. I'm a real estate photographer and need a reliable lens, but this just doesn't work for me. I may have gotten a bad copy, but judging by other reviews I'm not the only one. I won't exchange it because I don't trust this lens. I will try the Tamron 15-30 which has great reviews and a 6 year warranty. If this lens worked perfectly I would give it 5 stars out of 5 because at full aperture it's actually very good for the price. Just make sure you get it from a reputable dealer with a good returns policy and definitely not the gray market as you need a guarantee. On the other hand, I felt that sixteen was a bit too narrow for interior real estate. 15 makes a big difference when you need to get back into a corner.
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