Hi I recently got a canon g6 and I'm having some trouble with it.
If I take a photo with the mode dial on auto, the flash goes, then the LCD screen goes black for 2-3 seconds, then the image shows up
if I hold the camera perfectly still during the black screen period, and the subject holds perfectly still during the black screen period, the photo is fine. But if either one moves after the flash goes off, there are trails in the photo, as per the attached example
It seems to me that the shutter is staying open too long like if I were trying to do some sort of fancy time-lapse stuff
I'm not a camera expert so I need things explained to me in detail 
I looked in the manual and couldn't quite find what I was looking for, likely because I don't know the terminology.
I don't think it did this when I first got it a few weeks ago, so I may have buggered up some settings somewhere.
any help is much appreciated!

