It's all in how the camera is focused. If it is focused on a distant object, such as the car and gas pumps here, things that are very close can be blurry.

TV weather forecasters like to use cameras around the city to show weather conditions. Sometimes spiders build webs over those lenses and the spider appears as a fuzzy dot. The dead giveaway is how the object moves. In this case, it strongly resembles the movement of a bug.