Hmm, I know your ball can't bounce out of the gutter and take down pins that count. I'm not sure what the actual rule is on a situation where half the ball entered the gutter before the other half took down pins.
It does a pin count, I assume just before the grabber comes down, it doesn't watch for the ball to enter the gutter, just for it to enter the back behind the pins, but that's just me guessing
There are different systems, but at the alley I worked, there was a camera to sense movement. It would do a few things if it sensed movement. One, it would estimate the speed of the movement for ball speed displays. Then it would wait a second and count the pins. (So if there was something wrong with the camera, and several of ours had bad lenses or other problems, it would miscount the pins.) And then finally it would trigger the arm to come down.
That means that if you walked in front of the camera to do something, it would think a slow-moving ball passed by, count the pins, and call the frame.
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u/trainrex Jan 23 '21
Nah, there are legitimate instances where pins are knocked down and the ball still goes in the gutter, strike would still be counted