Around where I live there is a road where the limit changes from 70 km/h to 50 km/h due to a pedestrian crossing. They also placed a speed camera just after the crossing. When driving there I always find my self checking and double checking my vehicle speed and not paying full attention to the crossing. But in this specific case I guess that the "forced" speed reduction due to the camera is a bigger benefit (fewer accidents and less serious if they do happen) than the distraction caused by it.
