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Compact digital camera group test Gordon Laing, December 2005


 



 





Outdoor
/ Resolution / Noise / Corner sharpness / Fringe and macro / Geometry / Vignetting

Compact digital camera 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 lengths. The images were analysed with Imatest using 5th Order line calculation and the full areas presented here at a reduced resolution.

The Canon, Pentax and Sony cameras performed roughly the same, exhibiting a typical degree of geometric distortion at wide angle. The Fujifilm F11 boasted an above average result here.

Canon PowerShot A620
Fujifilm FinePix F11
Pentax Optio S6
Sony Cybershot DSC-N1
Canon PowerShot A620 wide angle at 35mm
Fujifilm FinePix F11 wide angle at 36mm
Pentax Optio S6 wide angle at 37mm
Sony Cybershot DSC-N1 wide angle at 38mm
35-140mm at 35mm
Distortion: 2.7% barrel
36-108mm at 36mm
Distortion: 1.53% barrel
37-112mm at 37mm
Distortion: 2.7% barrel
38-114mm at 38mm
Distortion: 2.89% barrel


Compact digital camera 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 lengths. The images were analysed with Imatest using 5th Order line calculation and the full areas presented here at a reduced resolution.

Zoomed-in to telephoto, the Canon and Sony models again exhibited average distortion, although the Pentax S6 was measurably worse in this respect. Once again though, the Fujifilm F11 took the lead.

Canon PowerShot A620
Fujifilm FinePix F11
Pentax Optio S6
Sony Cybershot DSC-N1
Canon PowerShot A620 telephoto at 140mm
Fujifilm FinePix F11 telephoto at 108mm
Pentax Optio S6 telephoto at 112mm
Sony Cybershot DSC-N1 telephoto at 114mm
35-140mm at 140mm
Distortion: 0.271% pincushion
36-108mm at 108mm
Distortion: 0.176% barrel
37-112mm at 112mm
Distortion: 0.985% barrel
38-114mm at 114mm
Distortion: 0.255% pincushion

Results continued...

Outdoor / Resolution / Noise / Corner sharpness / Fringe and macro / Geometry / Vignetting


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