In a method and apparatus for cleaning the front surface of a mounted lens a
web
is moved to a lowered position against the lens. A first segment of the web is
then slackened. The first segment of web is then rubbed against the lens. Following
the rubbing the web is pulled taut while the web is still in the lowered position.
A second segment of web can be wiped against the lens while the web is held taut.
The first segment can be wet and the second segment dry.
