Hello,
Thank you for posting your question on Microsoft community.
I appreciate you for providing details about the issue.
This issue may occur due to incorrect or corrupt camera or its app settings.
I would suggest you to run hardware and devices troubleshooter
and check. Please follow these steps:
a. Press Windows + C keys and click search.
b. Type troubleshooting in search box and click on it in search results.
c. Click "View all" and then click "Hardware and Devices".
d. Click "Next" and follow on-screen instructions.
Please also try changing camera flash settings using steps provided in the following articleand check the issue.
Refer:
Camera app and webcams help
http://windows.microsoft.com/en-us/windows-8/camera-app-faq#change-settings
I hope this information helps.
Please do let us know if you need any further assistance.
Thank you