When it comes to photo quality, the WX1 is a tough camera to judge. Going strictly by what happens between ISO sensitivities, the camera is a fairly typical point-and-shoot; good up to ISO 200, but from ISO 400 and above, noise reduction mucks up fine details. This is mainly noticeable when pictures are viewed at 100 percent or when heavily cropped.
The WX1's consistent color performance across sensitivities up to ISO 1600 keeps them usable for 8x10 prints and smaller. Photos at ISO 3200 look washed out, but can be printed at 4x6 inches and smaller--assuming you're not terribly picky.
There's some color noise/artifacts at all ISOs, including the lowest setting of ISO 160. Can you see what I'm talking about in this photo? No, probably not. If you're going to make poster-size prints and stare at them from a foot away, you're probably going to see it.
As you can see in the photo taken at ISO 3200, the rabbit kind of looks like a painting. Basically, the heavy noise reduction has smeared all the details. When printed at 4x6 inches, though, the resulting photo is OK. However, the colors are slightly washed out.
There's surprisingly little barrel distortion considering how wide the lens is (top). There's no pincushioning at the lens's longest position. I also didn't see much in the way of chromatic aberration.
One of the big selling points for the WX1 is the Handheld Twilight mode. With a single press of the shutter, the camera collects six shots and then processes them together to create the sharpest possible shot. In the 100-percent crop on the left you can see how vertical lines have some waviness to them, particularly in the windows. When I printed this entire scene at 8x10 inches, however, it's only visible if you're looking for it. And even then it's tough to see.