Hi Folks
I got my 930 yesterday and have the same issue, however, its a software issue and a temporary fix is setting the White Balance "WB" to something other than "Auto".. its an issue similar to my HTC One M8.. known as exposure and focus "hunting". As a photoigrapher, I never use Auto mode on Cameras anyway for this very reason. Auto mode is for Bright daylight quick shots.. Manual controls are for serikous photography
By the same token though, it still shouldnt be "hunting" as much as it is, hence why Ive contacted Nokia on Twitter as well and see if they can update "Nokia Camera" or the Camera Firmware itself in update 1.
Let me know how you get on