Fair - I agree it should be a faster fine to ticketing timeframe. Personally, I think they should do the one month "warning" tickets mailed out to everyone who speeds, when they first install the camera, followed by fines. Give drivers a chance to change their behaviour before being hit by fines.
But a cop isn't pulling over every single driver doing 50 in a 40 zone. A ticket camera is hitting all of them. I'd argue that's far more fair.