Board Thread:Support Requests - Getting Started/@comment-4594870-20140601130135/@comment-98.251.91.97-20140601175735

If you set the image to 100%, it will stretch to fill whatever the container is. So if the image is, say, 200 pixels wide, and the containing element (in this case a table cell) was 500 pixels wide, then the image will be stretched to be 500 pixels wide. If the container (table cell) was 100 pixels wide, the image would be squished into 100 pixels. So yes, the image will become distorted if it's dimensions don't match the container element.