abstract:In climbing (specifically in lead climbing) using a dynamic rope, the fall factor (f) is the ratio of the height (h) a climber falls before the climber's rope begins to stretch and the rope length (L) available to absorb the energy of the fall.
The cam also has a focal length extension factor of 1.33, which helps to mitigate the problem of "vignetting, " or a fall-off in brightness that would occur without the extension factor.