Those are really nice, whether "true" IR or not. Rick
http://photo.net/photos/RickW --- On Fri, 5/6/11, Timber <tim...@clancode.hu> wrote: > From: Timber <tim...@clancode.hu> > Subject: Testing K-r with Infrared. > To: pdml@pdml.net > Date: Friday, May 6, 2011, 2:01 PM > Hi, > > I just made a little test the other day, an unmodified > (yet) Pentax K-r > and the infrared photography. What I've found is the K-r > has very strong > IR filter (about 20EV) so both high iso handheld and > composing the > picture with Live View is impossible. Also using 'False > color' IR > filters, such as the Hoya R72 is out of question as the > amount of > visible red light will be too much. > > So the only option to try IR photography with the K-r was > the B+W 093 > (830nm) filter, which normally let's only the IR light go > trough with a > very very small amount of visible red. Well with the K-r > that very very > small amount becomes quite more so the 093 on the K-r acts > as the R72 on > a modded camera. I can't wait to get my hands on a 1000nm > filter :) > > Usually with bright sunlight 30 seconds, f4 at ISO 400 did > the trick and > the worst case scenario is cloudy sky where ISO 1600 is > needed. Normally > ISO 1600 is not noisy but together with long exposure, the > noise (which > in case of Pentax it's more like a fine grain) is becoming > visible. > > A few pictures can be found on my flickr stream > ( http://www.flickr.com/photos/timbah/5693966320/ ) if > you want to see > the results. > > Anyone tried IR photography with the K-5 / K-7 / K-x? > > Regards, > .timber > > > -- > 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.
