Pentax Optio S55 / S45 Review at DigiCamReview
DigiCamReview have reviewed both the Pentax Optio S55 and S45, 5 and 4 megapixel cameras respectively with a 2.5 inch LCD screen and 3x optical zoom lens.
“Image quality is good, the images have saturated colour, good contrast and good detail - however there is some purple fringing, and some images were quite soft. Images tend to come out of the camera looking very good. The camera did a good job focusing the majority of the time, only slightly struggling in low light. Noise was well controlled and low upto ISO200 but at ISO400 resulted in slight loss of detail. I did not notice vignetting in photos.”
Website: DigiCamReview - Pentax Optio S55 / S45 Review