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Pentax Optio A40 - Test shots - Detail and lens perfomance

By Cliff Smith


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A range of general test shots are shown over the next two pages. In some cases, the full size image has been reduced for bandwidth purposes, and a crop taken from the original full resolution image has been placed below it to show the overall image quality. Some other pictures may be clicked to view the original full-size image.


Here's the usual detail test shot of the West Window of Exeter Cathedral, for you to compare with other cameras. See below for a full res crop, or click to see the whole picture.


The level of detail is very good, but not really much better than the 10MP A30.


The lens does produce barrel distortion at wide angle, but is is fairly even.


Centre sharpness is very good.


Corner sharpness is also excellent, with no chromatic aberration.


Unusually, there is also some barrel distortion at the telephoto end.


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