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Olympus E-500 wide-angle geometry comparison
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To measure geometric distortion we photographed
a custom test chart consisting of a grid pattern with perfectly straight
lines. Here are the results for the cameras at their widest focal length
with an aperture of f8 in Aperture Priority mode. The images were analysed
with Imatest using 5th Order line calculation and the full areas presented
here at a reduced resolution. The image left was taken with the Zuiko Digital 14-45mm at 14mm f8 (equivalent to 28mm). Barrel distortion was measured at 3.28% which is comparable to its rivals. |
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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 EF-S at 18mm f8 Distortion: 3.35% barrel |
18-70mm DT at 18mm f8 Distortion: 3.49% barrel |
18-55mm DX at 18mm f8 Distortion: 3.51% barrel |
Olympus E-500 telephoto geometry comparison
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To measure geometric distortion we photographed
a custom test chart consisting of a grid pattern with perfectly straight
lines. Here are the results for the cameras at their longest focal length
with an aperture of f8 in Aperture Priority mode. The images were analysed
with Imatest using 5th Order line calculation and the full areas presented
here at a reduced resolution. The image left was taken with the Zuiko Digital 14-45mm at 45mm f8 (equivalent to 90mm). Barrel distortion was measured at 0.48% which is similar to the degree of distortion of the Canon and Konica Minolta lenses, although interestingly in the other direction; they both suffered from pincusion instead. The Nikon D50's bundled lens performed best here. |
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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 EF-S at 55mm f8 Distortion: 0.389% pincushion |
18-70mm DT at 70mm f8 Distortion: 0.309% pincushion |
18-55mm DX at 55mm f8 Distortion: 0.169% barrel |
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