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03/14/2008 01:25:58 PM · #1 |
| I got the sigma 10-20 exchanged, unfortunately not from sigma itself. So how do i test properly for soft spots? The other lens was soft on the left side . |
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03/14/2008 01:57:28 PM · #2 |
| Put on your measurebator hat and tape some newspaper to the wall (that is unless you're willing to buy, or make, some grid charts). Position the camera with the sensor plane parallel to the wall and shoot some frames. Enlarge the images to giganto-size and look at the text. Is it as readable in the center as at the edges? |
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03/14/2008 02:02:50 PM · #3 |
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