Sony Cyber-shot DSC-W200 wide-angle geometry comparison
To measure and compare the Sony Cyber-shot DSC W200's
geometric distortion we photographed a test chart consisting of a grid pattern,
using it and a number of rival models.
Here are the results for each camera with their built-in lenses at their
widest focal length; where possible, the aperture was closed.
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 Cyber-shot DSC-W200 zoomed-out to 7.6mm.
7.6-22.8mm at 7.6mm
Distortion: 2.56% barrel
Barrel distortion was measured at 2.56% which is roughly similar to the Canon A640 and Panasonic FX30, although none are as good as the Fujifilm F30 in this respect. Like most compacts zoomed-out to wide angle, you will notice some geometric distortion on subjects with long straight lines taken with the W200; we should however note the FX30 does a respectable job here considering its wider angle coverage.
Canon PowerShot A640
Fujifilm FinePix F30
Panasonic Lumix FX30
7.3-29.2mm at 7.3mm
Distortion: 2.48% barrel
8-24mm at 8mm
Distortion: 1.34% barrel
4.6-16.4mm at 4.6mm
Distortion: 2.7% barrel
Sony Cyber-shot DSC-W200 telephoto geometry comparison
To measure and compare the Sony Cyber-shot DSC W200's
geometric distortion we photographed a test chart consisting of a grid pattern,
using it and a number of rival models.
Here are the results for each camera with their built-in lenses at their
longest focal length; where possible, the aperture was closed.
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 Cyber-shot DSC-W200 zoomed-in to 22.8mm.
7.6-22.8mm at 22.8mm
Distortion: 0.98% pincushion
Pincushion distortion was measured at 0.98%, which is measurably worse than any of the other three cameras here - if you're shooting subjects with long straight lines using the W200 zoomed-in, you're likely to notice some geometric distortion. The really impressive performer here is the Panasonic FX30, which with just 0.01% distortion, delivers an almost perfect result. Now let's have a look at the Sony W200's light fall-off.
