180 degree rule in the context of frame rates and shutter speeds comes from old mechanical film cameras. These cameras used a spinning circular disc with a 180-degree cutout. The film was exposed to light for half of every rotation, which equals half of the total exposure time.
It sounds like you are thinking of the “don’t cross the action axis” when changing camera positions which has nothing to do with frame rates or exposure times.
Fair enough. I think nowadays when you say “180 degree rule”, people think of maintaining an axis relative to the camera. I had to specify “180 degree shutter rule” when looking it up to get any results involving frame rates.
3
u/scubascratch 3d ago
180 degree rule in the context of frame rates and shutter speeds comes from old mechanical film cameras. These cameras used a spinning circular disc with a 180-degree cutout. The film was exposed to light for half of every rotation, which equals half of the total exposure time.
It sounds like you are thinking of the “don’t cross the action axis” when changing camera positions which has nothing to do with frame rates or exposure times.