I tried looking at the pictures too, but as mentioned not publically available. Had a thought though - perhaps the album fits the pictures into a per determined size - this would stretch pics and cause a distortion. Are there any options configurable for the album. A good test of this theory - if the site permissions allows - would be to save the picture - a saved copy of the picture will not be governed by the display settings of the picture tag on the html page.
Good luck!