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Sony Cyber-shot DSC-R1 wide-angle uniformity comparison
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To measure lens vignetting and light
fall-off we photographed a white target with a highly diffused custom filter.
Here are the results for the cameras at their widest focal lengths with
the apertures wide open and the focus at infinity. The images were analysed
with Imatest and the full areas presented here at a reduced resolution.
Bigger percentages are better. The image left was taken with the Sony DSC-R1 at 14.3mm f2.8 (24mm equivalent). The light falls off to 79.2% of the center measurement, which while comparable to other good all-in-ones, is better than most D-SLR bundled lenses. |
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Canon EOS-350D with 18-55mm EF-S
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Fujfifilm FinePix S9500 Zoom
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Panasonic DMC-FZ30
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| 18-55mm EF-S at 18mm f3.5 Mean corner fall-off: 68.8% |
6.2-66.7mm at 6.2mm f2.8 Mean corner fall-off: 81.5% |
7.4-88.8mm at 7.4mm f2.8 Mean corner fall-off: 77.8% |
Sony Cyber-shot DSC-R1 telephoto uniformity comparison
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To measure lens vignetting and light
fall-off we photographed a white target with a highly diffused custom filter.
Here are the results for the cameras at their longest focal lengths with
the apertures wide open and the focus at infinity. The images were analysed
with Imatest and the full areas presented here at a reduced resolution.
Bigger percentages are better. The image left was taken with the Sony DSC-R1 at 71.5mm f4.8 (120mm equivalent). The light falls off to 87.2% of the center measurement, which again while comparable to other good all-in-ones, is better than many D-SLR bundled lenses. |
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Canon EOS-350D with 18-55mm EF-S
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Fujfifilm FinePix S9500 Zoom
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Panasonic DMC-FZ30
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| 18-55mm EF-S at 55mm f5.6 Mean corner fall-off: 83.8% |
6.2-66.7mm at 66.7mm f4.9 Mean corner fall-off: 91.5% |
7.4-88.8mm at 88.8mm f3.7 Mean corner fall-off: 87.6% |
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