On Oct 20, 2011, at 5:38 AM, Steve Sharpe wrote: > At 11:21 PM -0700 10/19/11, Larry Colen wrote: >> Tonight it was neither cloudy, nor had the moon risen, so on my way home >> from aikido I pulled off into a moderately dark parking lot to try out my >> astrotracer. >> >> http://www.flickriver.com/photos/ellarsee/sets/72157627935602764/ >> >> Each was shot at a different combination of ISO, shutter speed and aperture, >> varying from ISO 1600 to ISO 100. > > Excellent first attempts. This was the K-5, right? What lens? Any post > processing?
Thanks. K-5, all but the last FA31, the last was FA77. If you click on an image, then on "Pentax K-5" over on the right, it will show all the exif data. I twiddled with exposure, black point, contrast and curves. Since they were shot "in town" there isn't nearly the difference between light and dark I'd like. > > Coincidentally, I was out a couple of nights ago in my field trying to do the > same thing with my old *ist D and a Tamron 17mm f3.5 adaptall lens. I took a > series of 30 second exposures at ISO 800 with both noise reduction on and > then off. I was racing an incoming cloud bank so I knew they weren't going to > be that good, and a quick glance at them later in Aperture confirms that. > > Interesting, though: in each frame I took with the noise reduction off, there > is a bright glow in the upper left corner. I assume that is heat from the > camera's power supply. > >> >> One thing that I learned is that I'm going to need to go out during the day, >> focus my lenses on infinity and mark exactly where that is. >> >> I will also, definitely need to practice with stacking software. > > I downloaded Keith's Image Stacker (Mac) but there are no instructions with > it and I haven't figured out how to get it to work... > > -- > > Steve Sharpe > [email protected] > • > > http://earth.delith.com/photo_gallery.html > > > -- > 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. -- Larry Colen [email protected] sent from i4est -- 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.
