Originally posted by awaldram Could you explain what you mean?
Prioritizing focus groups, i.e. top right corner, top left corner, bottom right, bottom left, center... This would be great when tracking a single bird in a flock... prioritizing only one area would prevent the AF from jumping from one subject to another across the frame. The K-3 (any Pentax and most DSLR) considers every focus point as equal when tracking instead of prioritizing adjacent points. You cannot adjust tracking sensitivity or the tracking logic (fast moving/slow moving) useful when tracking a car driving by while you're panning or not or if the car is approaching facing you or driving by across the frame. You cannot adjust how quickly (or often) the camera will switch AF point instead of try to refocus the current one. This is useful when tracking erratic moving subjects (hockey, soccer, football). This is stuff you find on higher end Canon, granted they pack a lot more AF points but at 27, the K-3 is slowly getting there.
I only have a K5 with 11 points but if I am panning, the camera works much better at tracking when set to 5 points, at 11 it will try to focus on other points too quickly, I can only imagine the K-3 with 27... prioritizing or sensitivity would allow for more flexibility depending on your shooting style and on what you are shooting.