I might have changed lenses with the power off a dozen times in the last twenty years - never found an issue afterwards.
John Coyle Brisbane, Australia -----Original Message----- From: PDML [mailto:pdml-boun...@pdml.net] On Behalf Of Mark C Sent: Friday, 25 April 2014 12:47 PM To: Pentax-Discuss Mail List Subject: Re: Well, this is annoyi8ng. As a general rule I power off before changing lenses because I assume that a charged sensor will attract dust. But I surely have changed lenses with the power on more than a few times and have never noticed any issues. I may not be the best observers of this kind of thing, though. On 4/24/2014 3:22 PM, Bruce Walker wrote: > On Thu, Apr 24, 2014 at 2:05 PM, P.J. Alling <webstertwenty...@gmail.com> > wrote: >> Shoot with a manual focus lens, the four way controller defaults to >> its quick menu functions, don't turn the camera off, just change >> lenses to an auto focus lens. The four way controller returns to >> it's previous setting of controlling the autofocus points. Turn the >> camera off before changing the lens then turn it back on and it >> doesn't, What? Maybe it's just my camera. > That's not something I'd ever notice because I _always_ power off my > camera to change lenses. Without fail. Not a good idea at all to do > that under power. > > I expect that wiping live contacts across the lens contacts as the > lens cylinder rotates into lock will cause untold glitches and > ambiguous signals at the very least; possibly dangerous to either the > body or lens electronics. > > I know that changing the flash while powered is bad because I blew up > an AF540FGZ that way. $180 to fix that gaff. > > And pulling or inserting CF cards under power is likely to damage data. > > Anyone else change lenses without powering down the camera? > -- 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.
