Areas of focus look pretty good in JPEGs through ISO 200; then color noise and noise-reduction artifacts kick in. You can see how much detail you lose on the fur as well as the softness of the details on the tape measure. I wouldn't recommend going above ISO 1600.
Like the S110, the G15 inexplicably blew out exposure on the book page.
This detail comes from an out-of-focus area of the previous image. You can see how the sharpening in the JPEG produces some contouring and graininess in the out-of-focus areas, but the raw trade-off is softness in the sharper areas.
By ISO 1600, photos have that processy, special-effect look when viewed up close. However, they can still print pretty well as large as 13x19 if you use the raw files.
(1/100 sec, f2, ISO 1600, Evaluative metering, AWB, approx 28mm)
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Discuss: Canon PowerShot G15 photo samples
Be respectful, keep it civil and stay on topic. We delete comments that violate our policy, which we encourage you to read. Discussion threads can be closed at any time at our discretion.