Instead of laboriously comparing each incoming video frame with each stored target image, they could then search for all the targets at once.

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Competitors shoot from the prone position at a paper or plastic target on a wooden frame, with a round, black aiming mark on a white background.

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Hatfill's spokesman refused comment on who may be the target of any lawsuits or a time frame for filing them.

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With continuous AF shooting as we moved towards a stationary target, it took ten seconds to get nine shots, or less than one frame per second.

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