Camera Shutter Speed
- f: the duration of the exposure, in seconds
This is the amount of time from the instant the shutter opens to the instant
it closes. If it doesn't open and close instananeously, you should do things
so that the total amount of light that gets to the film during the exposure
to a uniform scene is the same as it would be if the shutter opened and closed
This chunk only makes sense inside a camera chunk.
See the camera example .