|PRINCIPLES OF ANIMATION
The first timing chart shows a slo-in using half and a quarter inbetween from drawing #1. The total elapsed time (if shot on twos) is 8 frames or 1/3 of a second (at 24 frames per second).
The second timing chart shows a slo-out using a half and quarter inbetween moving into drawing #4.
The final timing chart shows both a slo-in and a slo-out. Drawing #5 is the halfway inbetween. In this timing chart, there are more drawings (3 to be exact) moving into the slo-in and out. This will slow the action down considerably. The total elapsed time (if shot on twos) is 18 frames or just over 2/3 of a second (at 24 frames per second).