|
|
 |
 |
 |
 |
 |
 |
Sony Cyber-shot DSC-R1 wide-angle geometry comparison
 |
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 Sony DSC-R1 at 14.3mm f8 (24mm equivalent). Barrel distortion was measured at 2.9%, which is better than the Canon kit lens and close to the Fujifilm and Panasonic despite delivering much wider coverage than any of them. |
|
Canon EOS-350D with 18-55mm EF-S
|
Fujfifilm FinePix S9500 Zoom
|
Panasonic DMC-FZ30
|
||
 |
 |
 |
||
| 18-55mm EF-S at 18mm f8 Distortion: 3.35% barrel |
6.2-66.7mm at 6.2mm f8 Distortion: 2.38% barrel |
7.4-88.8mm at 7.4mm f8 Distortion: 2.35% |
Sony Cyber-shot DSC-R1 telephoto geometry comparison,
 |
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 Sony DSC-R1 at 71.5mm f8 (120mm equivalent). Pincushion distortion was barely measureable at just 0.0082%. Geometry is almost perfect on the R1 at longer focal lengths. |
|
Canon EOS-350D with 18-55mm EF-S
|
Fujfifilm FinePix S9500 Zoom
|
Panasonic DMC-FZ30
|
||
 |
 |
 |
||
| 18-55mm EF-S at 55mm f8 Distortion: 0.389% pincushion |
6.2-66.7mm at 66.7mm f8 Distortion: 0.237% pincushion |
7.4-88.8mm at 88.8mm f8 Distortion: 0.317% barrel |
 |
 |
 |
 |
 |
 |
