How to protect a camera from a dust, a rain and snows?

A few simple advices on how to protect your camera during certain weather conditions.
Sometimes it might be necessary to shoot during rain or a snowfall or in dusty air. In such cases it is possible to protect your camera by using an ordinary polyethylene bag.
More detail on http://oldoctober.com/en/
This method has been checked when shooting in rainy weather and snowfall.
