I thought you guys might find this interesting. This picture was taken with the exact same lighting and same camera position with no editing. This picture was taken with my cell phone.
The consistent light pattern seems to be an indicator that my lights are flickering because they've aged. The background on this picture is supposedly white and looks white in real life. My cellphone's camera is not quite as nice as my DSLR so it takes a slower picture and picks up the weird lighting pattern.
I have had these lightbulbs for about 5 years and they were not particularly expensive. If I remember correctly they are daylight bulbs from home depot.
2013-12-29 20.33.13 by
HeatherBehrendt, on Flickr