These are 100 percent crops of photos of our test scene at each of the camera's available ISO settings. For the WB800F features come before photo quality. I'm not saying the photos are bad, just that if you're shopping by megapixels, you probably won't like the results when viewed at full size, limiting how much you'll be able to enlarge and crop. However, if your main concerns are getting better photos than a smartphone and a megazoom lens in a smallish body at a good price, then you're set with the WB800F.
Like many point-and-shoots with its price and features, the WB800F does well up to ISO 400, so you'll be able to get good-looking shots when you have plenty of light. Photos get noticeably softer from noise reduction at sensitivities above ISO 400; going above ISO 1600 isn't recommended as you lose too detail and colors desaturate. And ISO 1600 I'd only use in a pinch. That said, the built-in flash is actually useful since it can be angled up and bounced, getting you better results than you'd have without a flash or with a blast of direct light that you'd get from other camera flashes.