Hi, fellow Pentaxians!
Have been dropping by to Your friendly forum from time to time- and now discovered that I somewhen even registered here
So my 2 humble cents about Pentax SR:
1. SR start-up time is 0.63 sec.- anything shorter results in NOT READY;
2. Pity that rear AF button does not start SR at ALL- hence the confusion when taking pics such way (it could be selectable in Custom Settings, I guess).
And one more thing: sometimes it is really usable to set camera to AF-C and set AF button to cancel AF- so SR is working all the time- personally found it useful when taking handheld macros with DFA100.
Best and happy anti-shaking, JR