Sports Cameras come in all shapes and sizes and different designs depending on whether you are driving, cycling, diving under water or racing.
Car Dash Cam info
Many sports enthusiasts use helmet cameras to capture the essence of the sports they love. For example, many para glider pilots carry a bullet camera to record their flights. This can be mounted on the helmet, foot or elsewhere to capture unique camera angles. There are many samples of helmet camera videos available on the net.
Wearing helmet cameras is also proving popular with cyclists as a safety aid, as it allows cyclists to record their journeys and to record any incidents from their point of view. This recording can be used in a court as evidence.
But in 2006, a British cyclist was convicted of abusing traffic wardens, also using evidence from a helmet camera.
Firefighters have begun to utilize helmet cams as a tool to assess their responses to fires and to allow non-firefighters to see the reality of what occurs inside a burning building. One technological improvement that fire departments would employ would be thermal imaging detection of differences in heat. 
Helmet cameras generally fall into two main categories; CMOS and CCD types. Although helmet cameras take on a variety of forms the majority are small cylindrical cameras resembling a tube of lipstick or a bullet, coining the name lipstick or bullet cameras. Helmet cameras may be connected to a video recording device with video input capability, such as a handheld camcorder, or purpose built digital video recorder.
And indeed Car Dashboard Cameras can also be used for filming Sports and capturing special moments, either as a spectator or as a Sports Car Driver. Being installed on the rear bumper of a car or a boat, even near salt water, is not considered normal usage for most Dash Cams and so it is important that you get the right one.
Another important feature to look for is if the camera is waterproof and weatherproof. Most Sports Cameras are Waterproof as they are often likely to be installed on the outside of the vehicle.
