I have the need to shoot the XH-A1 under very low light, so I decided to conduct a few tests with a subject (my daughter) by candlelight. Understanding that low light performance isn't the XH-A1's strongest attribute, I knew I was in for a challenge. The compression by Vimeo doesn't help your judging, but you can download the wmv file for better comparison, understanding it too has fairly heavy compression. At full resolution the results are pretty good.
Canon XH-A1 Candlelight Test on Vimeo