Ok...this may not be the greatest way to compare but I uploaded some photos to Snapfish. Of course it won't show the extended info and the images may not display quite as nicely as they do here. I uploaded in full res but who know what Snapfish actually does to them to display them. The "low" file numbers are from the S90 and the "high" file numbers are from the SD4000. You will need a Snapfish account (free) to view them.
As you can see in some cases the images were quite close, other cases the differences were somewhat dramatic and at times the SD4000 delivered a better image. For example, the very first photo of the large wine bottle I feel the SD4000 delivered the better image. It was both crisper and had less noise than the image from the S90. But the camera box photo from the S90 is clearly much crisper. The indoor image of the LR/DR is crisper from the S90 but the shot from the SD4000 is more accurate in terms of lighting and color. Outdoors, the photo of the yellow flower shows a pretty dramatic difference with the photo from the S90 being so much crisper the shot from the SD4000 actually looks out of focus. Perhaps it was as it was quite windy that day. The landscape shots of the backyard are also much better from the S90.
Hope this helps.
http://www1.snapfish.com/snapfish/thumbnailshare/AlbumID=2277500012/a=104783654_104783654/otsc=SHR/otsi=SALBlink/COBRAND_NAME=snapfish/
Schaf
As you can see in some cases the images were quite close, other cases the differences were somewhat dramatic and at times the SD4000 delivered a better image. For example, the very first photo of the large wine bottle I feel the SD4000 delivered the better image. It was both crisper and had less noise than the image from the S90. But the camera box photo from the S90 is clearly much crisper. The indoor image of the LR/DR is crisper from the S90 but the shot from the SD4000 is more accurate in terms of lighting and color. Outdoors, the photo of the yellow flower shows a pretty dramatic difference with the photo from the S90 being so much crisper the shot from the SD4000 actually looks out of focus. Perhaps it was as it was quite windy that day. The landscape shots of the backyard are also much better from the S90.
Hope this helps.
http://www1.snapfish.com/snapfish/thumbnailshare/AlbumID=2277500012/a=104783654_104783654/otsc=SHR/otsi=SALBlink/COBRAND_NAME=snapfish/
Schaf