Close the camera app from your multitasking bar. Enable then disable HDR again in the settings then reboot your phone (hold the home and power buttons until you see the apple logo...)
And is it the inbuilt camera app you are using or a 3rd party camera app? If it's the inbuilt one doing that, then connect your phone to your computer and open up iTunes. Leave all alone for 5mn, disconnect the phone from your computer, reboot your phone and try it again.
Any recent tweaks installed...?
Have you installed anything from cydia lately...?
Have you installed anything from cydia lately...?
Yes i have. But this problem, as i remember, was there, before i jailbreaked the phone.
Yes a restore is needed to cure that issue. But before you do that, try one last thing. Go to
settings> general> rest/ reset all settings.
After that restart your phone and try see if that issue is still there, if yes then you can restore the phone via iTunes, if not then the reset save you some time.