Here in Colorado the cameras are getting very popular. I got one a few weeks ago. I thought I hit the intersection on yellow. The camera takes a pic of your position when the light turns red with a digital time in 100ths of a second. Then another picture when you actually hit the intersection. Then of course a high resolution picture of your face. Doesn't get any more cut and dry than that. In Colorado it is a 75.00 fine. The whole scam is run from some company in Ohio. they install all the cameras and maintain them and send the cities cut to them. Great revenue provider. Doesn't go on your record here. The DMV isn't even involved.
From now on whenever you go through one of those intersections and the light flashes you will wonder if it was you that got your picture taken. Then you wait a month waiting to see if it was. It does make you more aware of yellow lights. Use the brakes instead of the accelerator when you see the light turn yellow.
Pay it and get on with your life.