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Sony Cybershot N2 wide-angle uniformity comparison
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To measure and compare the Sony Cyber-shot N2's
lens vignetting and light fall-off we photographed a white target with a
highly diffused custom filter using it and a number of rival models.
Here are the results for each camera with their built-in lenses set to their
widest focal lengths with the apertures wide open and the focus set to 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 Cyber-shot N2 zoomed-out to 7.9mm with its aperture wide open. |
7.9-23.7mm at 7.9mm f2.8
Mean corner fall-off: 79.6% |
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| Here the light falls off in the corners to an average of 79.6% of the center
measurement, which is an excellent result for the N2. It's roughly the same as the Fujifilm F30 and measurably ahead of the Panasonic TZ1 and especially the Canon A640. |
Canon PowerShot A640 |
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Fujifilm FinePix F30 |
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Panasonic Lumix DMC TZ1 |
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7.3-29.2mm at 7.3mm f2.8
Mean corner fall-off: 67% |
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8-24mm at 8mm f2.8
Mean corner fall-off: 80.8% |
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5.2-52mm at 5.2mm f2.8
Mean corner fall-off: 72.8% |
Sony Cybershot DSC N2 telephoto uniformity comparison
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To measure and compare the Sony Cyber-shot N2's
lens vignetting and light fall-off we photographed a white target with a
highly diffused custom filter using it and a number of rival models.
Here are the results for each camera with their built-in lenses set to their
longest focal lengths with the apertures wide open and the focus set to
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 Cyber-shot N2 zoomed-in to 23.7mm with its aperture wide open. |
7.9-23.7mm at 23.7mm f5.4
Mean corner fall-off: 86.9% |
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Here the light falls off in the corners to an average of 86.9% of the center measurement, which again places it roughly equivalent to the leading Fujifilm F30 and ahead of its other rivals, especially the Canon A640. It's fair to say that like the Fujifilm F30, you're unlikely to notice any darkening in the corners of the N2's images at any focal length. |
Canon PowerShot A640 |
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Panasonic Lumix DMC TZ1 |
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Fujifilm FinePix F30 |
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7.3-29.2mm at 29.2mm f4.1
Mean corner fall-off: 77.7% |
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5.2-52mm at 52mm f4.2
Mean corner fall-off: 81.8% |
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8-24mm at 24mm f5
Mean corner fall-off: 88.1% |
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