THe Nikon flash is just equivalent to the P32; good flash but can not beat the S600. The hack is very easy, just a matter of taking up the piece of tape over the power button, scraping a small part of the tan colored material that covers the metal (I have no idea what it is called) then that exposes the metal and you solder the power wire to that, the other two are just soldered right to a certain part. Battery life is supposed to be 1000 pictures with a pair of AA lithium batteries, that is Nikon's claim, I myself have not tested that. Detecting motion, start up time, and taking a picture is only 2-2.5 seconds during the day, at night I am not sure, probably close to the same. And I am not sure about the infinity focus, what is it?