On my *istD, I use it mainly when I have a dedicated auto flash fitted: it spurs the flash into reading the lens data and setting its coverage to the selected focal length of the lens - at least when it's a zoom lens.
HTH John Coyle Brisbane, Australia -----Original Message----- On Sat, Oct 4, 2008 at 2:16 PM, John Celio <[EMAIL PROTECTED]> wrote: >> It dawned on me that of all the buttons on the back of the K20, the >> one I've never ever hit is "AF". Its effect seems identical to >> squeezing the shutter a bit. So I went and looked around in the >> manual; it entirely escapes me why this button exists and what you'd >> use it for. So obviously I'm missing something... -T > > I discussed this with some of my former camera sales coworkers a couple > years ago, and we came to the unscientific conclusion that it's there to > appease the easily-impressed consumer who just likes having more buttons. > > It's entirely possible that the button has awesome, photo-changing features > (such as ugly face fixer, suspicion reducer, or perhaps even clothes > remover), but I too have never used it. > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
