faster film rates

there is some interest in this since 'the Hobbit' has been released in versions that use 48 frames per second (fps) and 'Avatar 2' is likely to use an even faster film speed (of 60 fps)
we are used to films being at at 24 fps - the current standard 

there are opportunities to consider direct and inverse proportion relationships

basically a faster film speed allows the amount of motion blur to be reduced

from Wikipedia - showing how a shutter gate controls the amount of light allowed through to the film (or other sensor)