I have gotten better results with long exposures using the AC adaptor. Maybe holding the shutter that long with batteries makes the readout noisier?
On 8/28/07, Tom C <[EMAIL PROTECTED]> wrote: > They were brand new lithium AA's. Crumby, huh? > > > > Tom C. > > > >From: Gonz <[EMAIL PROTECTED]> > >Reply-To: Pentax-Discuss Mail List <[email protected]> > >To: "Pentax-Discuss Mail List" <[email protected]> > >Subject: Re: I Hate My *ist D - Eclipse Photos > >Date: Tue, 28 Aug 2007 14:57:32 -0500 > > > >Were you running it off batteries or ac power adaptor? > > > >On 8/28/07, Tom C <[EMAIL PROTECTED]> wrote: > > > I hate my *ist D. I stayed up until 5:15 AM taking eclipse photos. The > > > first several within 20 minutes of when the eclipse started look OK, > >though > > > that was not the fabulous part of the evening(morning). However, the > >camera > > > quickly became noisy (electronic noise), even at short exposures ISO 400 > >and > > > 1/500 sec. All with Tokina 500 f/8 mirror lens. > > > > > > Of course it was at its absolute worst during totality. One shot for > >some > > > reason was less noisy than the others, though still ruined by noise > >(next to > > > the last as presented). > > > > > > http://photo.net/photodb/presentation.tcl?presentation_id=355756 > > > > > > Most shots looked good on the LCD, even when magnified to check focus, > >with > > > orange hues and turquoise tones at the edge of earths shadow. All lost > >to > > > noise. > > > > > > Some taken during totality didn't make muster because 8 - 10 sec > >exposures > > > were too long and exhibited too much tracking across the frame. > > > > > > I'm not sure if I have a hardware problem with the camera... may be time > >to > > > throw it in the trash. I've taken other aurora shots with the same body > > > that were virtually noise free at exposures of 15 - 20 seconds. The > >newer > > > *ist DS with less than 1000 shots on it was even worse, however, at ISO > >800 > > > and 2 secs. Images (not shown here) were absolutely obliterated. Looked > > > like a Photoshop effect. > > > > > > Still amazing to watch. > > > > > > Tom C. > > > > > > > > > > > > -- > > > PDML Pentax-Discuss Mail List > > > [email protected] > > > http://pdml.net/mailman/listinfo/pdml_pdml.net > > > > > > >-- > >PDML Pentax-Discuss Mail List > >[email protected] > >http://pdml.net/mailman/listinfo/pdml_pdml.net > > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
