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Pentax *istDL corner sharpness comparison
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To measure corner sharpness we photographed
the standard ISO 12233 test chart with each camera set to its best quality
JPEG settings. We used the bundled lenses at their widest and longest focal
lengths and with various apertures in Aperture Priority mode. The crops
are taken from the lower left corner of the chart and presented here at
100%. The Pentax 18-55mm DA at 18mm f3.5 is visibly soft in the corner, but acceptable once closed to f8. At 55mm the result is much better, performing similarly to the competition, although again benefits from smaller apertures. |
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Pentax *istDL
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Canon EOS-350D
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Konica Minolta Dynax 5D
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Nikon D50
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18-55mm DA at 18mm f3.5
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18-55mm EF-S at 18mm f3.5
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18-70mm DT at 18mm f3.5
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18-55mm DX at 18mm f3.5
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18-55mm DA at 18mm f8
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18-55mm EF-S at 18mm f8
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18-70mm DT at 18mm f8
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18-55mm DX at 18mm f8
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18-55mm DA at 18mm f16
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18-55mm EF-S at 18mm f16
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18-70mm DT at 18mm f16
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18-55mm DX at 18mm f16
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Pentax *istDL
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Canon EOS-350D
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Konica Minolta Dynax 5D
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Nikon D50
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18-55mm DA at 55mm f5.6
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18-55mm EF-S at 55mm f5.6
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18-70mm DT at 55mm f5.6
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18-55mm DX at 55mm f5.6
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18-55mm DA at 55mm f8
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18-55mm EF-S at 55mm f8
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18-70mm DT at 55mm f8
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18-55mm DX at 55mm f8
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18-55mm DA at 55mm f16
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18-55mm EF-S at 55mm f16
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18-70mm DT at 55mm f16
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18-55mm DX at 55mm f16
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