never really thought about it 'cause I aint into AF but do ANY AF systems stay active once the shutter opens? & Why?
JC OCONNELL [EMAIL PROTECTED] -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of D. Glenn Arthur Jr. Sent: Tuesday, June 03, 2008 10:15 PM To: pdml@pdml.net Subject: (*istD questions) Argh. Near miss of a different sort. I went to Radio Shack to buy parts to build myself a cable release for the *istD. They had submini phone plugs, but only mono, not TRS, and it turns out that shorting ring to sleeve keeps the autofocus constantly activated (which I presume costs battery life). And they didn't have cheap IR LEDs to make an invisible flash with, either. Though there was a spot marked for them in the drawer. *pout* (Unsurprisingly, they didn't have PC connectors either, so I'll probably look for the cheapest PC-cord accessory I can find and snip the plug off it when I do build the invisible flash.) Question: when emulating a locking cable release for long exposures, should I disengage the autofocus connection once the shutter is open, or does the camera automagically do that internally? (Or should I just not worry about the battery drain of having the autofocus system powered while the mirror is up? Is the cost of holding the shutter open high enough to swamp having the autofocus powered? I've no idea what aspets of the camera's operation cost how much juice, but I'm guessing that electromechanical aspects -- and lighting the LCD backlight -- cost more than purely electronic operations ... right?) -- Glenn, starting to wonder how much an *istD repair manual would tell me about the electronics. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
