After you fill out your profile then give us an example of a shot that is to dark. WE need you to upload a photo and also tell us the Aperture, shutter speed and ISO that the camera picked.
Guidelines to adding a photo to your post.
1. Resize photo to 1000px on the long side.
2. Resolution set to 72ppi (Pixels Per Inch)
These guidelines will be good for viewing on a computer but will not be good for printing. This will help safeguard your copyright.