Pentax Optio S10 - Test shots - ISO performance

Over the next few pages we show a range of test shots. On this page the full size image at the minimum and maximum ISO settings have been reduced to let you see the full image, and a series of full resolution crops have taken from original images at a range of ISO settings to show the overall image quality.

----



This is the full frame at 64 ISO.

----



At the minimum setting of 64 ISO the image quality is excellent, with very sharp detail.

----



Not much difference at 100 ISO, and image quality is still very good.

----



200 ISO and already there is visible image noise, particularly in the green and black areas.

----



Noise gets progressively worse at 400 ISO, with large random colour patches, but there is still some fine detail.

----



At 800 ISO the noise reduction system has blurred the image, resulting in a loss of fine detail.

----



At the maximum 1600 ISO image quality is very poor, with blotchy colour and little fine detail.

----



This is the full frame at 1600 ISO.

----