I’ve been testing a Virb XE, and my experience shows that regardless of what interval you set the photos to be taken, the exposure/white balance are only checked every three seconds. So if you want a good accurate set of photos, set the interval to 3/s, which makes it seem pointless to have the Virb at all. My $40 action cameras also take 3/s photos, and their quality is not much worse, even though the megapixels are much lower.