I had a A520 which is 4 Meg resolution. Recently I bought a SD850. By shooting the same scene with Auto mode on both cameras, I noticed the quality of A520 is lot more better than SD850. SD850 gives more noise on the picture and A520 is sharper as well. I tried A720IS with DIGIC III processor and same issue. The only way to improve the noise issue, is to provide enough light, whereas no such annoying problemwith A520.
It appears to me either DIGIC III sucks, or I am not using the new camera properly. However since I am comparing them in AUTO mode, so I am assuming it should not be the setting issue ...
Any body has any suggestion before I return the SD850???
Thanks in advance.