Hoya Circular Polarizer Filter For The Canon PowerShot G10 Digital Camera

Light rays which are reflected by any surface become polarized and polarizing filters are used to select which light rays enter your camera lens. PL (Linear Polarizing) and PL-CIR (Circular Polarizing) filters have the same effect, but it is important that you choose the correct version for your camera. They allow you to remove unwanted reflections from non-metallic surfaces such as water, glass etc. They also enable colors to become more saturated and appear clearer, with better contrast. This effect is often used to increase the contrast and saturation in blue skies and white clouds.
HOYA's polarizing filters do not affect the overall color balance of a shot. Many of today's cameras use semi-silvered mirrors or prisms to split the light entering the viewfinder in order to calculate exposure and focusing distance. PL (Linear Polarizing) filters can sometimes interact with these items to give unpredictable exposure or focusing. So we recommend that you choose a PL-CIR filter unless you have a manual focus camera which has no beam splitter. PLEASE NOTE: Some cameras require an adapter tube to fit the filters

The importance of helmets

The most important piece of safety gear for motorcyclists and their passengers is a properly fitted helmet. Helmets are designed to cushion and protect riders' heads from the impact of a crash. Like safety belts in cars, helmets cannot provide total protection against head injury or death, but they do reduce the incidence of both. A study of 900 motorcycle crashes conducted by the University of Southern California found that wearing a helmet was the single most critical factor in preventing or reducing head and neck injuries among motorcycle drivers and passengers.

Helmets also decrease the severity of head injuries, the number of days spent in the hospital, and the overall cost of medical care after a motorcycle crash. Helmets have additional benefits: They protect eyes, preventing eye injuries, and they protect the cyclist from dust, rocks, and other debris thrown up by other vehicles.

The National Highway Traffic Safety Administration estimates that between 1984 and 1999 the use of helmets saved $13.2 billion in medical, rehabilitation, and disability costs. If all motorcyclists had worn helmets in those years, probable savings would have been an additional $11.1 billion.

Each year the NHTSA tests 30 or more helmets. The testing is very extensive; in 2007 the report for each helmet ran more than 30 pages. Not every make and model is tested every year, but it's worth checking http://www.nhtsa.dot.gov/cars/testing/comply/fmvss218 to see whether your helmet, or one you're thinking of buying has been evaluated, and how it scored.

The Snell Foundation, a private foundation that promotes safe protective headgear for all sports, also tests helmets. Their rating criteria are even more rigorous than the governments, and many helmet models display their Snell approval sticker as further assurance of safety.

No matter how effective and safe your helmet is, it only protects you if you wear it.

Thomas Penfield, an injury lawyer in San Diego, California represents those who have had the experience of suffering severe injuries caused by a motorcycle accident. He provides more information on safe motorcycle riding and helmet safety in the Motorcycle Accident Resource

Jamey Astore
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