What are large vertical structures that support the weight of the structure overhead

Columns

Explanation:

A column is a type of structure that helps transmit the weight of a structure above to the elements located below. In this way, a column helps support the weight of the structure overhead. Columns operate through compression. Columns tend to be designed in ways that enable them to resist lateral forces. Moreover, columns sometimes have an aesthetic purpose only and they do not support any load.

changeable lenses of different focal lengths allows light to enter the camera,which then forms the image on light-sensitive film;