Nokia Nseries :: Dark Images In Bright Sunlight?

Has anyone else run across this issue? If I have the Nokia 808 in Creative mode and manually adjust the ISO, sometimes I get dark images. This is in bright daylight with my subject completely visible and well-lit in the view finder. It doesn't really matter what the ISO setting is, the pictures will come out dark. If I choose Automatic and then back to Creative, it will "fix" it.

That's not entirely true. I don't know what fixes it. But it will return to normal. I tried to make it happen before writing this note, but could not repeat it indoors. It's possible the bright sunlight was part of the problem...as if the 808 overcompensated for all the light.that gave me an idea...looking at the EXIF properties of the dark images, Lightsource is "Unknown".On the properly exposed images, it says "Daylight". Perhaps this is a clue?